Batman: Arkham Knight Save Game Location
Windows
Batman: Arkham Knight save games can be found on Windows here:
C:\Games\Batman Arkham Knight\BMGame\SaveData
Steam:
Batman: Arkham Knight save games installed through Steam can be found on Windows here:
C:\Program Files (x86)\Steam\userdata\[user_id]\208650\
Other Locations:
Batman: Arkham Knight save games may also be found on Windows here:Alt:
C:\Users\[user_name]\Documents\WB Games\Batman Arkham Knight\HERE WILL BE NUMBERS\SaveData\backup
Linux
Batman: Arkham Knight save games can be found on Linux (Proton) here:
~/.steam/steam/userdata/[user_id]/208650