Campaign: Killed an enemy with a drone.

Collect all of the Gambler's Chips

Obtain 36 medals on the original Arkham City campaigns (as Batman)

Complete a game of Supply Raid on Wharf, Capitol, Water Tower or Coal Mine

Complete 5 events in Main Stage Mode in the same session

Clear the game without opening the item box.

Obtain 72 medals on the original Arkham City campaigns (as Batman)

Revive a teammate 20 times in co-op.

Obtain a key by completing the second Riddler trial.

Campaign: Collected all submachine-gun models.

Smash your way through all the Billboards

Solve 10% of Riddler challenges

Complete a game of Interrogation on Wharf, Capitol, Water Tower or Coal Mine