Batman: Arkham Asylum

100% Completion Checklist

Location: While escaping the Intensive Treatment area after the elevator gets trashed, near the end of the climb (before the fight with the thugs). It'll be right in front of you and an on-screen prompt will appear (Hold Scan). Can't miss it.

Location: Outside of the mansion, in the garden-like area (climb over the metal gate or grapple over the walls to access it). Looking at the south wall, the Chronicle is between the second and third pillars (starting from the west).

Location: Inside the abandoned building, in the second floor. Grapple up from inside the building to the ledge, or from outside to the window.

Requires Explosive Gel.

Location: From the ground, northeast of Patient Interview Tape #1 - Arkham Island, West, look northwest and up. There's a little area you can grapple to with a breakable wall. Use Detective Mode if you can't see it.

Location: Beneath the ground floor. Can access from a grate on the southwest corner, or through a breakable floor mostly above the Chronicle itself.

Location: Right after entering the tunnel to the Batcave you need to grapple up a wall. The Chronicle is on your left as soon as you pull yourself up.

Location: On the west wall.

Requires Explosive Gel.
Location: Underneath the stairs leading up to the Botanical Garden; there's a destructible wall on the east side.

Requires: Explosive Gel.

Location: Behind a breakable wall in a vent in the ceiling.

When progressing during the story you had to climb up to some vents to get out of the Hall, and blow up a breakable wall. The Chronicle is just in front of you after doing so, can't miss it.

Requires Explosive Gel.

Location: Behind a breakable wall on a platform reachable by grappling up to a vent.

Location: On a balcony you can grapple up to if you look south when standing between the two small rooms.

Requires Explosive Gel.

After getting Riddler Trophy #4 - Penitentiary the cell door will lock behind you. Blow up the wall and Scan the Chronicle.

Location: Underground. Right as you enter the area, to your left and right is a small mini garden-like area, each leading to a vent. Follow either one to the end and drop down.

Note: This one appears to be the only gatherable collectible if you visit this location before the story brings you here.

Location: From Riddle #4 - Botanical Gardens jump north to a ledge you can shimmy on and head left. Pull yourself up and Scan the Chronicle inside this little nook.

Requires Explosive Gel.

Location: Midway up the elevator shafts. For clarity's sake, follow from Riddler Trophy #4 - Intensive Treatment.

With the vent with the Trophy to your left, jump the gap ahead and turn left. Climb and then grapple up. Turn left again, climb over the pipes and then crouch under the next. While crouched immediately turn left and you'll reach 2 walls. The Chronicle is behind the left one.

Requires Batclaw.
Location: In a high vent. From the door leading to decontamination look west and up. Use Detective Mode if you can't see it.

Requires Ultra Batclaw.
Location: Behind the high breakable wall.

Requires Ultra Batclaw.
Location: After the Titan fight, go into the area he came out from and pull down a high breakable wall. The Chronicle is at the end of the cubicle.

Requires Ultra Batclaw and Line Launcher.

Location: Behind a breakable wall. From the area where you fought the two Titans, pull down the wall and Line Launch into the newly opened area.

Requires Ultra Batclaw.
Location: Behind a high breakable wall.

Requires Ultra Batclaw.

Location: Behind a high breakable wall. From the entrance, grapple to the top of the central room/structure (where the doc was held hostage) and turn around to see it.

Requires Explosive Gel or Ultra Batclaw.

Location: Behind a breakable wall in the main room (ground floor), on the south side in the southwest corner.

Requires Line Launcher.

Location: Use the Line Launcher across the electrified water.

Requires to have Scanned all 23 prior Chronicles.

Location: On the ground in the room where Warden Sharp was.
Scanning this grants the "World's Greatest Detective" Achievement.

Location: In the upstairs office; use the stairs on the east side.

Location: On a desk inside the office.

Location: Inside the southern guard tower (grapple up to it), on the table.

Location: In the western guard tower, on the desk. Grapple up to it (or use the stairs).

Location: On a box inside the shack.

Location: On a desk in the small office on the second floor (enter from the area where the elevator is, to the south).

Location: On a desk in the room where Cash and Dr. Kellerman were.

Location: On the ground, next to the corpse.

Location: On the second box, on your left, as you enter the area.

Location: In the small room. The vent to access it is on the north side.

Requires Batclaw.

Location: On the desk in this room behind iron bars. Access it through the vent to the southwest.

Location: On the desk.

Location: On the desk.

Location: On a desk in the office on the second floor, need to grapple up.

Location: On a bunch of papers on the south side. Need to save the 2 guards from Quinn.

Requires Batclaw.

On a desk in an office on the second floor, after grappling up a vent. Need to access this room to progress the story, can't really miss it.

Location: On a desk in a room on the second floor.

Requires Cryptographic Sequencer.

Location: On a desk in the west guard room. Overload the panel just next to the electric barrier.

Requires Cryptographic Sequencer.

Location: On a desk in the room in the mountain. Access it from either of the guard towers to the east.

Location: On the bench.

Location: On the bench.

Location: On a computer terminal on ground level.

Location: On the bench.

Location: On the bench, next to the place where the hostages' cages get dropped.

Requires Cryptographic Sequencer with Range Amplifier upgrade.

Location: On the computer terminal.

Location: After returning to Intensive Treatment after the events in the Botanical Gardens.

When entering this area from the south, turn right. On a desk in an office behind an already-disabled electric barrier.

Requires Cryptographic Sequencer.
Location: On a desk to your left as you enter the office.

Location: On a box straight ahead of you as you enter the area from the south.

Requires Ultra Batclaw (to get to this area).
Location: On a drum barrel in this corridor.

Requires Line Launcher.
Location: On a drum barrel in a platform. Line Launch from the entrance to the room.

Requires Cryptographic Sequencer.

Location: On a desk as soon as you pass the electric barrier.

Requires Ultra Batclaw.

Location: On the ground, behind a high breakable wall.

Location: On the table.

Requires Cryptographic Sequencer.

Location: On a desk on the north side of this little office.

Location: On a desk in the room where Bane was.

Location: On the ground around the little office in the center.

Location: After climbing up the elevator shafts, on the platform where you fought the Joker's goons. (To the right and then right again when looking at Chronicle of Arkham #2 - Intensive Treatment).

Location: On the ground around Boles' corpse.

Location: On the ground in front of the entrance.

Location: On the bottom floor. They are a bit separated; the other 2 are to the west and east of this one.

After rescuing Dr. Young; they pop out of the purple present box.

Location: Second floor, in front of the electric panel you had to disable.

Location: Second floor, in front of the electric panel you had to disable.

Location: On the roof of the room where Aaron Cash and Dr. Kellerman were.

After rescuing Dr. Kellerman; they pop out of the purple present box.

After rescuing Dr. Chen; they pop out of the purple present box.

Location: In front of the elevator, after rescuing all 3 doctors.

When returning to Arkham North after rescuing Gordon. Two in the ramp, one just past the door northeast.

Location: Along the corridor, one at a time.

Location: From the entrance to the area (ground level, south side), make a right and climb into a sort of hollow pillar that will be on your left. Jump across to a walkway and turn right (east). Jump to a second walkway, turn around the corner, and jump the gap twice.
Have to get to this platform to progress story, can't miss them.

Location: On the "third level", at the entrance to the corridor leading to the exit.

Location: On the "third level", in the corridor leading to the exit.

Location: On the "third level", in the corridor leading to the exit.

After the visit to the Batcave (when you obtain the Batclaw).

Location: In front of the gate to the passageway.

After the visit to the Batcave (when you obtain the Batclaw).

Location: In front of the door to the Mansion.

Location: In front of the door, just up the stairs. One is inside the small room; pry open the vent to get it.

Location: On the floor of the biggest of the three rooms of this subsection. Access through the vent to the southeast.

Location: From the purple present box after exiting Dr. Young's Office.

Location: Around the glass tables; one near the north one, two near the south one.

Location: One as you enter the room from the western circular room, one as you go down the stairs and one at the very bottom.

Location: On a second floor accessed by grappling up (look up when entering this area from the south). Two at the north end, one in a cabinet "cubicle" on the west side.

Location: From the purple gift box, after rescuing Dr. Young from Zsasz.

After returning to Arkham West on the way to the Penitentiary.

Location: In the guard tower.

Location: In and right outside the office on the second floor, need to grapple up.

After rescuing the 2 guards from Quinn.

After rescuing the 2 guards in the Guard Room.

After rescuing the 2 guards in the Guard Room.

Location: On the floor as you enter.

From the purple gift box, after capturing Quinn.

Location: On the ground, near a corpse. When returning to Arkham East on the way to the Botanical Gardens.

Location: On the ground, as you enter the area. At your feet or maybe even behind you.

Location: On the ground, just a few steps from the door.

Location: On the ground, in front of the bench.

Location: On the ground, close to the bench.

Location: On the ground, next to the vent entrance.

Location: In the control deck. You have to take out a thug here for story progression, can't miss them.

Location: On the floor, on our way out of the Gardens to speak with Cash.

Requires Line Launcher.

Location: On the upper entrance to the building, accessed with the Line Launcher, where the sniper is during story progression. Can't miss them.

Location: On the ground after collecting the spores in Croc's Lair.

Location: On the ground.

Location: On the ground, after climbing up the stairs.

Location: On the ground.

Location: On the ground.

Location: On the ground.

Location: From the purple gift box after clearing the Control Room.

Location: On the ground, after the second visit to the Batcave.

Location: On the ground, after the first visit to the Botanical Gardens. Near the Warden's statue and the guard house.

Location: In the south guard tower, after the second visit to the Batcave.

Location: After the first flight of stairs to the Botanical Gardens, after the second visit to the Batcave.

Location: On the ground, during our second visit to the Gardens.

After the second visit to the Gardens.

Location: On the ground.

After the second visit to the Gardens.

Location: In the guard tower.

Riddle: Don't cut yourself on this Sharply observed portrait.

Solution: Scan Warden Sharp's portrait on the west wall.

Riddle: A puzzle has many sides, but only some are visible.

Solution: Scan the question mark.

From inside the office, in Detective Mode, look south. The "top part" of the Riddler's iconic question mark is on the middle one of the 3 windows. The "dot" is on the wall outside, below a large, round vent.

Riddle: You don't know Jack about Gotham. Tune in to find out.

Solution: Use Zoom Mode to check the radio, making sure the name Jack Ryder's clearly visible.

Riddle: Dr. Jonathan Crane plans on elevating fear to new depths.

Solution: Drop into the west elevator shaft and climb into a vent to the east. In it, follow the red-lit vent south until you reach a cave-like room (if you open the map you'll see you're basically in Cell Block Transfer). Scan that room.

Riddle: A top hat and tails is the only dress code for this party in the North.

Solution: The poster of the Penguin on the south wall.

Riddle: The legacy of this island has been well and truly buried.

Solution: There's an unearthed coffin in this general location. Zoom in on the headstone and Scan.

Riddle: Gotham's greatest family towers over the city.

Solution: On the roof. Grapple to the clock tower (can do from the general location of Riddler Trophy #7 - Arkham Island, East). Head to the northeast corner and look northeast toward the city. Zoom in on the building with the big W and Scan.

Riddle: My challenges appear to those with the correct position in life.

Solution: Scan the question mark.

On the roof, at the top of the clock tower, next to Riddler Trophy #1 - Arkham Island. Go to the south side of the platform, look south and enter Detective Mode. The top part of the question mark is on the roof of the building below you; the dot is at your feet on the platform you're standing on. Align them and Scan.

Riddle: Now I see it, now you don't.

Solution: Scan the question mark.

The top part is under the archway to the east (the one used to enter the building). The dot is on the underside of the "stone walkway" inside and up.

Requires Cryptographic Sequencer.

Riddle: Let's face it, there are two Dents on the wall.

Solution: Scan the Dent posters on the south wall in the west guard room.

Riddle: Tweedledum and Tweedledee SAW it, can you SEE it?

Solution: Scan the seesaw on the side of the road just as you reach the gate out of the asylum.

Requires Ultra Batclaw.

Riddle: Does Scarecrow's gas break down barriers as it drives you insane?

Solution: Grapple up to the "archway" closest to the gate to the east and look north and up. Pull down a high breakable wall, grapple to it and Scan the cannisters.

Requires Cryptographic Sequencer with Range Amplifier upgrade.

Riddle: Zsasz is counting on you finding his work.

Solution: Scan the table with 3 dead guards "playing cards" in the guard room above the entrance to the building. The panel to overload is on the other side of the electric barrier.

Riddle: Do you see what I can see? No? Then maybe I am in a stronger position.

Solution: Scan the question mark.

The top part is on the ground right in front of the door to the Penitentiary. The dot is on the railing on the ledge above said door (grapple up to it). Align the symbol from there (it takes a bit of movement and camera work).

Riddle: TICK! TOCK! News flash! Someone is not getting out of here alive.

Solution: On the ground floor. Scan the cell with the skeletons.

Requires Explosive Gel.

Riddle: A question can only be answered from a new perspective. Don't you agree?

Solution: Scan the question mark.

Blow up the breakable floor around this area on the second floor. Enter Detective Mode and face north. The top part is on the "wall" that was previously covered by the breakable floor; the dot is on the ground on the floor below.

Riddle: Was this fire fly too hot off the press?

Solution: Zoom in on the newspaper clips on the cabinet and Scan the one about Firefly.

Riddle: Shhhhsshh! Rumors persist that Tommy Elliot operates in Arkham. Can it be true?

Solution: Scan the whiteboard on the second floor, west wall.

Riddle: What silent killer of the oceans can be found in a tiny jar?

Solution: At the north side of the eastern examination table there's a small cart with a jar on it. Zoom in and Scan.

Riddle: Is this bear the Bane of his life?

Solution: Scan the bear on the desk.

Riddle: A puzzle has many sides, but only some are visible.

Solution: Scan the question mark.

Exactly in the spot where you found Riddler Trophy #5 - Caves, use Detective Mode and look west and a bit up. The dot is on the wall right in front of you and the top part on the underside of a bridge above.

Riddle: Who is the main man in the main hall?

Solution: Scan the portrait of Commissioner Gordon.

Riddle: Did Amadeus go mad, or was he just dizzy?

Solution: Scan the cell with the circular markings.

Riddle: It'll be a cold day in Hell when this Ghul rises again.

Solution: Scan the toe tag of the corpse in the morgue.

Riddle: How do you mask your feelings without losing control?

Solution: Scan the black skull-like mask on the wall of Dr. Young's actual office, right below the vent you used to enter.

Riddle: What does a bird need in the rain?

Solution: Scan the top hat and umbrellas in the glass display.

Riddle: This fiendish puzzle literally appears out of thin air.

Solution: Scan the question mark.

Enter Detective Mode and you'll see the top part on the west wall, next to the glass table. The dot is on the vent on the east side, you need to grapple up to it. It's on the same platform as Chronicle of Arkham #1 - Arkham Mansion.

Riddle: A game of Cat and mouse can be painful.

Solution: Scan Catwoman's glass display.

Riddle: Isn't the Warden too old for a puppet show?

Solution: Scan Scarface's glass display.

Riddle: How do you reflect on your successes and failures, Batman?

Solution: Scan your reflection on the women's toilet's mirror (no need to Zoom, but you have to stand pretty close to it).

Riddle: A case of mistaken identity?

Solution: Scan the person behind the glass wall.

Riddle: Two people, one voice, no gun?

Solution: Scan the tommy gun in the glass display on the north wall, on the second floor. Need to grapple up.

Riddle: This room is the end of days for even the most celebrated killer.

Solution: Scan the cell with all the calendar pages.

Riddle: What has four walls, two sides, and one ex-DA?

Solution: Scan the "Vote Dent" poster on the wall of the cell.

Riddle: All alone in your cell? Why don't you break the ice with the most dangerous prisoners?

Solution: Scan the cell covered in ice.

Riddle: Is the number up for these guards?

Solution: Scan the 2 dead guards with the books.

Riddle: What time is tea time in Wonderland?

Solution: Scan the tea set on the second floor, northwest of the statue. From the south entrance, go up the stairs to your left.

Riddle: Remember the Waynes? How could anyone forget?

Solution: Zoom in on the plaque on the bench and Scan it.

Riddle: The Ratcatcher needed more than just his charm to lead his army.

Solution: Around this area the ground of the vent won't be a solid panel, but some iron bars. Below there's some gloves and other gear. Scan it.

Riddle: This challenge can only be seen by those with a different view on life.

Solution: Scan the question mark.

(Follow the directions in Riddler Trophy #8 - Botanical Gardens until you cut down the catwalk.)
As you start crossing the catwalk, climb up a wall to your left and shimmy left until you can pull yourself up. Crouch under a pillar to go north and use Detective Mode. The question mark is on the ground, half of it on the platform you're on and half of it on a platform below.

Riddle: Looks like all the king's horses trampled all the king's men.

Solution: Scan the figurines on the bench.

Riddle: Is this a tribute to what a mad dog left behind?

Solution: Scan the plaque at the feet of the statue.

Riddle: There's no closet in the Gardens, so someone is using the roof instead.

Solution: From the spot where the cages landed, look west and up to see a skeleton. Grapple to a platform closer to it (like the one in the picture), zoom in and Scan.

Requires Cryptographic Sequencer.

Riddle: Hook up with the relatives before you're transferred out of here.
Solution: Zoom in on the picture of Cash's family and Scan it.

Requires Cryptographic Sequencer and Explosive Gel.

Riddle: Even I was shocked when I saw how Maxie Zeus was treated!

Solution: Blow up the destructive wall and Scan the cell (almost any part of it works, like the drawings ahead of you).

Requires Cryptographic Sequencer.

Riddle: Where would I find my home sweet home?

Solution: Scan the cell.

Requires Cryptographic Sequencer, and Line Launcher or Armor Upgrade...probably V4, depending on your skill.
Riddle: Our records show that a Strange transfer request was made in this room.
Solution: Scan the red folders on your right saying "STRANGE FILES".
The room itself is safe, but the corridor is electrified and it hurts A LOT. Use the Line Launcher or roll through it. If you try to do it rolling, be advised that the camera repositions weirdly and you'll probably get stuck somewhere along the way, leading to death on the way out, if not on the way in. But I'm sure it's probably possible if you're skilled enough.

Riddle: Is the generosity of our benefactors on the Wayne?
Solution: Scan the golden plaque on the wall.

Requires Ultra Batclaw.

Riddle: Are you going to take your hat off to Harley, Bats?

Solution: From the Sanatorium, pull down the high vent cover above the elevator and drop all the way down the elevator shaft. Access a vent there to reach this office.
Scan the little mannequin (or head of one) with Harley's hat.

Requires Line Launcher.
Riddle: When is something right in front of you but still hidden from view?
Solution: Scan the question mark.
Go to the north room with the Batarang-destroyed box, look south and use Detective Mode.

Riddle: Prometheus, Arkham guards' most wanted and most hated.
Solution: Zoom in and Scan the Wanted poster on the east wall.

Location: Inside the vent at ground level.

Location: Inside the vent at ground level.

Location: At the end of the vent, in a small cubicle on the north side just before exiting east. (Right in front of you when following this vent during the story, can't miss it).

In a vent under the floor; access it by opening one of the two grates.

Location: In the office.

Location: Inside the shack.

Location: Near the northeastern-most headstone, semi-hidden in the grass in front of it.

Location: From Chronicle of Arkham #1 - Arkham Island, East. Looking east there's a ledge you can grapple to, leading to a small area with a lone pillar in the middle. The Trophy is behind it.

Location: Outside of the mansion, on the roof. Go all the way east in the garden-like area and look way up. If you have trouble, grappling to the ledges on the north or south sides is easier.

This Trophy is practically above Riddler Trophy #5 - Arkham Island.

Location: On the roof. Grapple to the very top of the clock tower (can do from the general location of Riddle #2 - Arkham Island, on the east side). Move to the west side and the Trophy will be right in front of the clock.

Location: From the top of the clock tower, the southwest corner. Look southwest and there will be a tower-like building with an "open" roof. Below it, to your left, there's a metal fence. The Trophy is in front of it; jump/glide there.

Location: On the roof of the northern guard tower (probably need to grapple up twice).

Location: On the ground in this small "protrusion".

Location: Inside the abandoned building, ground floor, close to the south wall.

Requires Explosive Gel.

Location: On the ground, between the two guard houses, there's a breakable floor (use Detective Mode if you can't find it). Stand on top of it and use the Gel.

Location: On the roof of the western guard tower.

Location: On a large stone "cliff". Reach it by gliding northeast from the roof of the western guard tower (Riddler Trophy #10 - Arkham Island, North).

Location: On the roof. Grapple up to a ledge a bit to the west of this pin (on the north side) and then walk east over the slanted roof.

Location: On the rooftop.

Location: On the roof of the shack, on the southeast side, in front of the tires.

Location: Underneath the guard tower, semi-hidden in the bushes.

Location: At the bottom of the waterfall, in front of a drainage ditch.

Location: On a ledge above the door.

Location: In the fenced-off room (in Maintenance Access). Reach it by following the vent to an intersection and taking the path to your right.

Requires Explosive Gel.

On the ground floor, behind a breakable wall.

Location: On the roof of this small room.

Location: Enter the vent from any of the "entrances", from the main corridor.

Location: In the vent, at ground level (technically second level, but accessible on foot, no need to grapple or anything).

Location: On the roof of the room where Quinn held Gordon prisoner. During story you had to grapple up before crashing down through the glass ceiling. The Trophy is right on the ledge, impossible to miss.

Location: Just before entering the tunnel to the Batcave, look above to a ledge you can grapple to. The Trophy is in a small tunnel there.

Requires Explosive Gel.
Location: Activate Detective Mode in this room with the skulls in the center to find a destructible wall with the Trophy behind it.

Requires Batclaw.

Location: In a vent just above the corpse. Open it with the Batclaw and grapple up to it.

Requires Explosive Gel.

Location: Behind the breakable wall.

Location: From the entrance to the area (ground level, south side), make a right and climb into a sort of hollow pillar that will be on your left. Jump across to a walkway and turn left (west). Drop down to a second walkway and then jump to a third. The Trophy's around the corner.

Location: In a room-of-sorts inside a pillar.

From the entrance to the area (ground level, south side), make a right and climb into a sort of hollow pillar that will be on your left. Jump across to a walkway and turn right (east). Jump to a second walkway, turn around the corner and jump the gap. On your left there will be a ledge you can shimmy on. Follow it around the corner and climb into the pillar.

Location: In a room-of-sorts inside a pillar, on the "second level".

While progressing through the story you'll climb up a collapsed pillar west of Joker Teeth x 2. After proceeding a bit more you'll reach some sort of aqueduct.
The Trophy is in front of you, can't miss it.

Location: In a pillar, on the "third level".

From the aqueduct mentioned in Riddler Trophy #7 - Caves, go up a second collapsed pillar. When you reach the platform at the end, notice a ledge you can shimmy on to your left. Do so around the corner and pull yourself up twice.

Requires Explosive Gel.
Location: From the door to the Mansion, in Detective Mode, you can see a destructible floor on the ground just a bit to the northeast.

Location: In a vent on ground level. From the bottom of the stairs, facing north, it's on your right.

Requires Batclaw.

Location: In a hollow in the pedestal of the huge statue.

Requires Batclaw.

Location: On the desk in this room behind iron bars. Access it through the vent to the northwest.

Location: On the roof (of sorts) of this area. Access it through the vent north of Riddle #7 - Arkham Mansion.

Requires Batclaw.

Location: In the vent.

Location: Inside a vent at the very top floor, the same level from which you cut down the chandelier. Probably need to grapple up twice.

Requires Batclaw.

Location: Inside a vent on the ground floor (excluding the basement where the hostages were), the level with the glass floor.

Location: On a desk in the office.

Requires Explosive Gel.

Location: Behind some iron bars. Grapple up and get rid of the destructible floor/roof. Accessed from the Abandoned Tunnel just south.

Requires Batclaw.

Location: In a vent to your right just before entering the building.

Location: In the last toilet stall.

Requires Explosive Gel.

Location: Behind a breakable wall.

Requires Explosive Gel.

Location: Behind a breakable wall, in a cell on the second floor.

Requires Cryptographic Sequencer.

Location: In a cell on the second floor, behind iron bars. Overload the box right beside it.

Location: In the cell.

Location: In the cell.

Requires Batclaw.

Location: In a vent accessed from the Guard Room after saving the 2 guards from Quinn. In the hall leading south and then west, the vent entrance is up on the east wall.

Requires Explosive Gel.

Location: In a cell behind iron bars. Need to blow up a breakable wall on the second floor and drop down.

Requires Cryptographic Sequencer.

Location: Just inside Cell 5. Overload the control panel for it in the room where Quinn was, south of Patient Interview Tape #1 - Penitentiary.

Requires Cryptographic Sequencer.

Location: On ground level, under the service lift; overload the panel right next to it.

Requires Cryptographic Sequencer with Range Amplifier upgrade.

Location: In a guard room above the entrance to the building. The panel is on the other side of the electric barrier.

Requires Batclaw

Location: From the southwest entrance look northeast and up and grapple up to a vent. From there, walk a bit northeast and find a second vent looking southeast and up.

Requires Cryptographic Sequencer with Range Amplifier upgrade.

Location: In a guard tower just outside the abandoned building. Grapple up to the door; the panel is on the other side of the electric barrier. (Reportedly, may be able to get it without the upgrade if you stand at the very limit of the barrier before taking damage).

Requires Cryptographic Sequencer.

Location: On the floor in the room in the mountain. Access it from either of the guard towers to the east. The Trophy is between the 2 fenced off "offices".

Requires Cryptographic Sequencer.

Location: On a desk in the guardhouse.

Location: On the second floor, directly north of the statue. There are some metal grates on the floor shaped like a T. Trophy's inside.

Requires Explosive Gel.

Location: In a vent on the ground floor (actually below, you need to drop to the base of the statue/fountain). There's a breakable wall northwest of the statue, right below the tea set in Riddle #1 - Botanical Gardens.

Requires Cryptographic Sequencer with Range Amplifier upgrade.

Location: On the third level, behind the electric barrier (the panel to overload also behind the barrier). The Trophy is on a desk to your left as you enter the room.

Location: In the vent.

Location: In a fenced off room, below ground level.

From the south entrance to the area, drop down to the very bottom (water level) and go to the north side. There will be a metal grate on the ground; enter it and follow it south until you can pop out in the aforementioned room.

Location: At the end of the sewage drain.

On the bottom (water) level go to the northeast corner and drop down yet a bit more, then follow the water south.

Location: From the south entrance drop down to the bottom level and go up the stairs in front of you, then go up the stairs going east.

At the top turn north and jump the gap, then jump the gap west (careful not to bonk into the pipe). Go west and climb up the wall to the ledge you can shimmy on and go south, pulling yourself up when you reach the water.

Turn around (you're now facing east) and jump the gap, then walk a bit south and cut the rope holding up the catwalk to the east.
Finally, cross the catwalk, turn north and jump the gap to reach the Trophy.

Requires: Line Launcher

Location: When exiting this area, don't aim the Line Launcher at the door to the east, but rather at this alcove to the southeast.

Requires Line Launcher

Location: On the ground after using the Launcher. You need to come this way during story progression, can't miss it.

Location: From the south entrance, pry open a vent cover to your right, on the ground. Get in and make a left, then another left and immediately a right; kick the vent cover open. The Trophy is in front of you behind a fence; climb to the low platform to your left to reach an entrance.

Requires Batclaw.

Location: Midway up the elevator shafts.

From the ground floor. At the southeast corner, next to the stairs, look north and up. Grapple to the closest (highest) platform. Turn around and jump into a ledge you can shimmy on.
Follow it right and climb up into a vent. After getting out, to your right, grapple up twice and immediately turn left. The Trophy is in a vent in front of you. Take off the cover with the Batclaw and carefully jump to it.

Requires Cryptographic Sequencer.
Location: Climb up the ladder in the office.

Requires Cryptographic Sequencer and Batclaw.

Location: Climb up the stairs to the second floor and you'll see a vent up in the wall in front of you as you reach the top. The Trophy's inside.

Requires Line Launcher.
Location: On a platform right above the water (it's in plain sight). Use the Line Launcher from the corridor just northwest of here.

Requires Line Launcher.

Location: Across the gap, in plain sight.

Location: On the lowest level of this cliff; may have seen it during the cutscene.

Requires Line Launcher.
Location: From inside the cave southwest of here, grapple up to the lowest edge (the one to the northeast). You can step outside to a small platform, and from there glide to the Trophy.
To get back, use the Line Launcher towards the southwest to return to the cave area, and then grapple up back to the platform from which you glided.

Requires Ultra Batclaw.

Location: In a room in the ceiling. Pull down the destructible roof and grapple up to it.

Requires Line Launcher.

Location: On the second floor. From the aqueduct jump south to the hollow pillar that contained Riddler Trophy #7 - Caves, and from there Line Launch east to this Trophy.

Requires Line Launcher.

Location: On the third floor. From the platform to the east exit, Line Launch west. You need to head this way during story progression, can't miss it.

Location: Near the top, east from the Pump Control Room (whose breakable wall you had to pull down). With said room behind you, look right and slightly below.

Requires Ultra Batclaw.
Location: As you're climbing the second set of stairs, look up to see a high destructible wall.

Requires Ultra Batclaw.
Location: Behind the high breakable wall.

Requires Line Launcher.

Location: Use the Line Launcher from the northeast side of the roof of the Medical Facility. It's in the open, easy to see.

Requires Ultra Batclaw.

Location: Right before the gate (do not enter the tunnel), already in the "hallway", look up to see a breakable ceiling. Pull it down and grapple up to find the Trophy.

Requires Line Launcher.

Location: In a kind of hall around here. Line Launch from the west guard tower.

Requires Ultra Batclaw.

Location: Behind a high breakable wall pretty much just below Riddler Trophy #1 - Arkham Island, North. Access it from the ground.

Requires Ultra Batclaw.

Location: Grapple up to the vents in the corridor southwest and look northeast and up to find a high breakable wall.

Requires Ultra Batclaw and Line Launcher.
Location: It's the Trophy we can see behind the bars next to Riddler Trophy #6 - Arkham Island, North. Proceed through the tunnel until you reach the metal door and turn around. Pull down the breakable wall and Line Launch into the area.

Requires Ultra Batclaw.

Location: Pull down a breakable ceiling.

Requires Explosive Gel.

Location: Behind a destructible wall.

Requires Ultra Batclaw.

Location: Behind a high breakable wall.

You need to use the Ultra Batclaw from the end of the catwalk (Riddler Trophy #8 - Botanical Gardens for reference if you get lost). Then, try to jump into it from the nearby platform or grapple up from a lower floor.

Requires Ultra Batclaw.

Location: Behind a high breakable wall.

Requires Ultra Batclaw.
Location: In a high vent. Above the office of sorts, top floor.

Requires Cryptographic Sequencer.

Location: On a small shelf on wheels up the stairs, on the second floor. The panel to overload is to you immediate left as you enter the room.

Requires Ultra Batclaw.

Location: In a high vent.

Requires Ultra Batclaw.

Location: On the medical table next to the west wall.
When accessing this area from the east, the high breakable wall to pull down will be on your left if you go north in the main hallway.

Requires Line Launcher.
Location: Line Launch to the room that had the box we broke with the Batarang. The Trophy's to the corridor to the north, to your immediate right.

Requires Explosive Gel.

Location: Inside the eastern guard house. Grapple to the roof and use the Gel on the breakable area.

Location: On the desk.

Location: On the desk.

Requires Cryptographic Sequencer.

Location: On the desk in the guard building; overload the panel just by the door.

Requires Cryptographic Sequencer.

Location: On a desk in the guardhouse.

Requires Cryptographic Sequencer with Range Amplifier upgrade.

Location: On the third level, behind the electric barrier (the panel to overload also behind the barrier). The Map is on a bunch of papers to your right as you enter the room.

Location: Below ground level, under the elevator shafts (meaning, after returning to Intensive Treatment). On a desk in the office up the stairs.

Requires Ultra Batclaw.
Location: In the Pump Control Room, on a stool.