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

Achieve 16 medals on combat challenges

Achieve 8 medals on combat challenges

Spirit of Amadeus Arkham revealed

Complete one combat challenge without taking damage

Complete story mode on Normal difficulty

Solve 85% of riddler challenges

Solve 70% of riddler challenges

Complete a combo of 40 moves (any play mode)

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

Conquer the effects of the Scarecrow's fear gas

Solve 40% of riddler challenges

Solve 25% of riddler challenges