Rescue the guards and henchman from the Joker toxin in Decontamination

Complete a combo of 5 moves (any play mode)

Clear the Arcade Battle in Offline Mode.

Finish the game in Normal Mode

Defeat 100 enemies with headshots

Defeat 50 enemies with stealth attacks

Defeat 20 enemies with gunfire by aiming while hanging

Find 30 treasures

Find 20 treasures

Defeat three enemies with one explosion

Defeat 20 enemies with hand-to-hand combat

Find one treasure