Complete story mode on Easy difficulty

Defeat the giant Titan Ivy plant

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

Venture into Killer Croc's lair and come out alive

Defeat two Titan Henchmen at once

Solve 25% of riddler challenges

Save Dr. Young from being killed by Victor Zsasz

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

Defeat Bane

Survive the nightmare of the Scarecrow's fear gas

Escape from Intensive Treatment to the island surface

Survive the onslaught from the deformed Joker henchman