Complete a combo of 10 moves (any play mode)

Rescue the guards and henchman from the Joker toxin in Decontamination

Complete a combo of 5 moves (any play mode)

Rescued a groupmate from death in a co-op game

Won a duel against another player

Finish the game in Easy Mode

Find 20 treasures

Defeat 50 enemies with stealth attacks

Defeat 20 enemies with the Pistole

Defeat 70 enemies with the M4

Defeat 50 enemies with the 92FS - 9mm

Defeat three enemies with one explosion

Discover the Assassin's Tomb inside Santa Maria della Visitazione.