Earn a silver medal in a vehicle challenge

Explored all the objects on the map

Complete story mode on Normal difficulty

KO all the henchmen celebrating your arrival at the party

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

Catch a Batarang (any play mode)

Conquer the effects of the Scarecrow's fear gas

Defeat two Titan Henchmen at once

Complete a combo of 40 moves (any play mode)

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

Complete one combat challenge without taking damage

Save Dr. Young from being killed by Victor Zsasz