I Am the Night
For a COMPLETE "I Am The Night" video walkthrough of Batman Arkham Origins refer to the YouTube Playlist:
https://www.youtube.com/playlist?list=PL9g3S7ipfNGv0EaXMgC_we-uQDF0Vbxbs
I am the Night is a special post-game mode in Batman: Arkham Origins. I am the night is a truly stupendous challenge, requiring the player to complete the entire New Game Plus campaign without dying a single time. That means you must complete every mission and quest of the main campaign without making a single fatal error.
While the player can save I Am the Night games between play sessions, any death will erase that save and force the player to restart I Am the Night from the beginning.
Considering the difficulty of The Deathstroke encounter and the precise timing necessary in some of the Batman action sequences, I Am the Night's permadeath is quite an achievement. If you're determined to unlock 100% and willing to cheat a bit, you can make the journey a bit easier with a simple trick. When death threatens you, immediately pause and find the Restart button. Using Restart will walk your progress back a bit, but will restore your health and preserve your game. It's not complete protection from booby traps and won't save you from a point-blank shotgun blast, but it can be the difference between keeping and losing ten hours of progress.