Complete story mode on Normal difficulty

KO all the henchmen celebrating your arrival at the party

Catch a Batarang (any play mode)

Complete a combo of 20 moves (any play mode)

Venture into Killer Croc's lair and come out alive

Defeat two Titan Henchmen at once

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

Solve 5% of riddler challenges

Save all the doctors in medical

Escape from Intensive Treatment to the island surface