This is the game's normal ending and the easiest to achieve. After you defeat the game's final two bosses Radagon of the Golden Order and the Elden Beast, you will be in the game's final area. In front of you there will be a statue that you can interact with. Choose to "Mend the Elden Ring" to unlock this trophy. Please note that if you have inherited the Frenzied Flame, this option will not appear and you will have to reverse the Frenzied Flame by using Miquella's Needle (obtained by completing Millicent's quest) in the arena that you fight  Dragonlord Placidusax.The fights leading to the final area of the game can be quite difficult. The two final bosses must be fought in succession and if you die in the second fight, you will have to fight the first one as well.

Radagon of the Golden Order

Recommended Level: 125 (personal level: 130)

The boss

The first of the two final fights. Radagon features high resistance to holy damage, scarlet rot and bleeding, which take a lot to accumulate before they proc. He has a weakness however in Fire Magic. For his attacks:

• He uses his hammer to do a basic combo of up to 3 attacks.
• He can also stomp the ground in front of him dealing damage in a small area of effect.
• The more dangerous attack with his hammer is when he slams it to the ground with Holy damage, which will erupt and throw you in the air. There are a few variations of this attack, such as his 3-hit combo where he smashes the ground with his hammer after charging it with Holy energy, which must be perfectly dodged with a roll towards him. Running to the side will not help as he will redirect his hit to your location.
• Radagon has a grappling attack indicated by him charging his hammer for a few seconds before lunging towards you. Quickly roll to the back or else you will suffer a lot of damage.
• At about 50% of his HP he will often be doing a small teleport damaging the area where he was and throwing a lightning spear in the ground where he will shortly appear and follow with another attack.
• The lightning spear can also be thrown without him using the teleport animation, which will explode and continuously damage you if you remain in the area of the explosion.

Strategy

Recommended Equipment

• Ashen Remains: Black Knife Tiche
• Talisman: Erdtree's Favor +2, Haligdrake Talisman +2, Dragoncrest Greatshield Talisman, Pearldrake Talisman +2
• Weapon: Moonveil Katana, Dark Moon Greatsword, Meteorite Staff, Bloodhound's Fang, Godslayer's Seal
• Spells: Lord's Divine Fortification, Black Flame Blade, Black Flame, Glintstone Pebble
• Ashes of War / Skills: Glintblade Phalanx, your special armament's skill
• Boss' Weakness: Black Flame / Godskin Incantations
• Boss' Resistance: Holy Damage

Melee & Ranged Strategy: Using a summon such as the legendary Ashen Remain Mimic Tear at a max level is recommended as you will need the extra time to heal and redirect his attacks on the enemy and of course cast your spells. Undoubtedly though, it's highly recommended to use the legendary Ashen Remain Black Knife Tiche also at max level to utilize this summon's Black Flame that deals damage over time and also reduces the boss' max HP for a certain amount of time. Be very careful with the HP of your Summon as after this fight you will find another boss and if the Summon dies, you will not be able to re-summon it in the next fight.

Equipping armor and talismans increasing your negation to Holy and physical damage, such as the Lord's Divine Fortification and Dragoncrest Greatshield Talisman can make a difference in both yours and your summon's tankiness if you are using the Mimic Tear. Weapons and Spells with the Black Flame effect are effective against Radagon. The boss can be staggered and use a critical hit on him if you are using melee attacks, just note that it takes a lot of attacks to achieve that. Due to the relatively small arena Radagon will often attack you leaving very little space for healing and casting your spells. Time your rolls perfectly and use the downtime after his attacks or when he is aggro'd by your summon to deal damage to him.
 

The Elden Beast

Recommended Level: 125 (personal level: 130)

The boss

The second fight and the last of the game, this boss can be very annoying as you will find yourself often chasing it while trying to avoid his obnoxious attacks.
NOTE: As of Patch 1.12 you can now use Torrent during this fight.

• The fight will always start with a fire breath attack from the beast which can be avoided by running straight to its back.
• In close combat the beast will use its weapon to perform up to three horizontal slashes, which need good timing to be dodged by rolling to the direction the blade comes from.
• Two close-ranged attacks it has is that it will stab its blade in the ground slowly charging it before releasing a huge explosion that can be avoided by running near its tail. The other attack is summoning a mini black hole which will shortly explode and can be avoided by running away from the beast.
• This boss also has a grappling attack that is indicated when it charges an energy ball on its left hand and can be avoided by perfectly dodging towards it.
• When it is far away from you, a ranged attack it will use is its energy blast when the boss is flying up in the air and summon rings around you. You must run away from the rings as they appear jumping above them to avoid their slow.
• When you run towards the boss it will 1) spit flames which can be avoided by running to the side, 2) throw a sparkling mist whose trail will explode with holy damage , 3) throw four arcs of holy damage towards you, dodged by rolling towards the beast and 4) release a huge ball of energy that will track you for a long time before it expires. This last attack is a pain to dodge, as it will always deal some damage to you. The best thing to do here is to roll towards the bigger ball when it is close to you.
• One final attack it does is summon spears of holy damage at your location for a short amount of time. For this continuously roll away from them until the attack stops.

Strategy

Melee & Ranged Strategy: The equipment, healing and Summon you will have for this fight is what has remained from your previous fight. Thankfully the Beast also does Holy damage like Radagon so the equipment you have from your fight with Radagon will still help. If you still have your summon, it can tank some of his more lethal attacks before it falls, while you try to close in the distance and land some hits. Tiche's black flame is important as it can reduce the Beast's max HP for a period of time.

This boss just like Radagon takes increased damage from Fire attacks, especially Black Flame Incantations. Avoid using the lock-on camera (  ) for this boss due to its immense size resulting in the camera angle being pretty bad in this fight. Melee characters will only be able to damage it a few times when they are close enough and using your weapons skill is recommended to deal more damage. Magic characters will have a somewhat easier time as they will be able to land a hit from a slightly bigger distance.

Final Bosses Fight Video

Video by Boss Fight Database showing both fights in succession