Defeat the giant Titan Ivy plant

Ride Titan henchman and knock down 10 thugs (any play mode)

Conquer the effects of the Scarecrow's fear gas

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

Defeat Bane

String up one henchman and drop him to surprise a second (any play mode).

Escape from Intensive Treatment to the island surface

Survive the onslaught from the deformed Joker henchman

Take down Zsasz in the Patient Pacification Chamber

Heal 250 pedestrians.