Spirit of Amadeus Arkham revealed

Defeat the giant Titan Ivy plant

Solve 85% of Riddler challenges

Conquer the effects of the Scarecrow's fear gas

Solve 70% of Riddler challenges

Capture and lock up Harley Quinn

Face your biggest fears and keep your sanity

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

Complete a combo of 20 moves (any play mode)

Escape from Intensive Treatment to the island surface