Always use the trainer in Single-Player/Offline mode . Although Arkham Knight has no competitive multiplayer, using trainers while connected to leaderboard services can sometimes cause issues.
Is there a you are trying to bypass?
: Prevents Batman from taking damage during combat or predator encounters. One-Hit Kill : Allows you to take down any enemy with a single strike. Batmobile Modifiers Unlimited Vehicle Health : Makes the Batmobile indestructible during tank battles. Unlimited Missiles & Afterburner batman arkham knight pc trainer fling best
for the trainer on different platforms (Steam, GOG). Always use the trainer in Single-Player/Offline mode