Complete one Cooperative Multiplayer game

Defeat 30 enemies with the Arm Micro

Inspect almost every display case in the Cartagena Museum

Destroy 30 enemies while they're distracted by the Doppelbanger.

Kill eight enemies with one shot.

Buy all of the weapons.

Defeat 50 enemies in a row without auto-reloading

Defeat 30 enemies in a row with your side arm

Finish the game in Hard Mode

Finish the game in Easy Mode

Kill 10 enemies with thrown-back grenades

Defeat 50 enemies with stealth attacks

Defeat ten enemies using hand-to-hand combat on the back of the convoy trucks