Stop the unstoppable

Clear the airwaves

Solve the first riddle

Drop in on an old friend

There is only one way in

Save the damsel, but is she in distress?

Complete story mode on Normal difficulty

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

Defeat two Titan Henchmen at once

Save Dr. Young from being killed by Victor Zsasz

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