New Story+ and I Am the Night Modes
Unlock the post-game difficulty modes.
Unlocking the post-game modes in Batman: Arkham Knight.
1.New Story+ Mode
Complete the game on Normal or higher to unlock 'New Story +' at the main menu. You keep your WayneTech upgrades and experience points and play on the Knightmare difficulty.
2.I Am the Night Mode
Unlocked by completing New Story+ mode. This special post-game mode requires you to complete the entire New Game Plus campaign without dying a single time.