Complete a combo of 10 moves (any play mode)

Solve 10% of riddler challenges

Save all the doctors in medical

Escape from Intensive Treatment to the island surface

Rescue the guards and henchman from the Joker toxin in Decontamination

Complete a combo of 5 moves (any play mode)

Kill Zeus

Solve the Three Judges

Deliver 50 kicks to Hounds

Collect all of the Gorgon Eyes

Collect all of the Phoenix Feathers

Kill Cronos

Gut 3 Centaur Generals