Answer the call for help

Save the damsel, but is she in distress?

Complete story mode on Normal difficulty

KO all the henchmen celebrating your arrival at the party

Solve 70% of Riddler challenges

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

Conquer the effects of the Scarecrow's fear gas

Solve 55% of Riddler challenges

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

Solve 40% of Riddler challenges

Face your biggest fears and keep your sanity

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

Survive the nightmare of the Scarecrow's fear gas