Use the Monkey Bomb. (Map Pack 3 only)

Open all doors in the map. (Map Pack 3 only)

Complete one Cooperative Multiplayer game

Finish the game in Easy Mode

Defeat 50 enemies with stealth attacks

Defeat 50 enemies with the Dragon Sniper

Defeat 20 enemies by shooting from the hip (without aiming with L1)

Defeat 100 enemies with headshots

Find ten treasures

Defeat 20 enemies with a single punch, after softening them up with gunfire

Defeat 50 enemies with hand-to-hand combat

Defeat 20 enemies with hand-to-hand combat