Based on the DC Comics superhero Batman, it is the successor to the 2011 video game Batman: Arkham City. The game's main storyline is set several years before that of 2009's Batman: Arkham Asylum ...
Batman: Arkham Knight technically has only one ending ... The AR Challenges and the Season of Infamy DLC do not affect the ending you unlock. You can ignore them to save time.
This is another DLC costume available to anyone who purchased the Premium Edition or the game’s Season Pass. This is pretty much all we have on Batman Arkham Knight unlockable costumes.