Defeat 20 enemies with headshots

Defeat 50 enemies with hand-to-hand combat

Find one treasure

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)

Venture into Killer Croc's lair and come out alive

Defeat two Titan Henchmen at once

Capture and lock up Harley Quinn

Face your biggest fears and keep your sanity

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

Complete a combo of 20 moves (any play mode)