Complete story mode on Normal difficulty

KO all the henchmen celebrating your arrival at the party

Complete a combo of 20 moves (any play mode)

Venture into Killer Croc's lair and come out alive

Defeat two Titan Henchmen at once

Capture and lock up Harley Quinn

Save Dr. Young from being killed by Victor Zsasz

Gain access to Administration after it is locked down by the Joker

Complete a combo of 10 moves (any play mode)

Survive the nightmare of the Scarecrow's fear gas

Solve 5% of riddler challenges

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

Complete a combo of 5 moves (any play mode)