Stop the unstoppable

Clear the airwaves

Drop in on an old friend

There is only one way in

Save the damsel, but is she in distress?

Solve every riddle on the island

Complete story mode on Normal 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

Complete a combo of 10 moves (any play mode)