Capture and lock up Harley Quinn

Solve 25% of Riddler challenges

Gain access to Arkham Mansion after it is locked down by the Joker

Survive the nightmare of the Scarecrow's fear gas

Save all the doctors in Medical

Solve 5% of Riddler challenges

Rescue the guards and henchman from the Joker toxin in Decontamination

Complete a combo of 10 moves (any play mode)

Caught 10 fish with a Sniper Rifle.

Wiped-out all the developers.

Captured all of the Sea People murals.

Entered the Glacial Area for the first time.

Ate rations.