Defeat 100 enemies with headshots

Defeat three enemies with one explosion

Find ten treasures

Defeat 20 enemies with hand-to-hand combat

Find one treasure

Venture into Killer Croc's lair and come out alive

Solve 10% of riddler challenges

Capture and lock up Harley Quinn

Face your biggest fears and keep your sanity

Gain access to Administration after it is locked down by the Joker

Survive the nightmare of the Scarecrow's fear gas

Complete a combo of 10 moves (any play mode)