Finish the game in Hard Mode

Finish the game in Easy Mode

Defeat 30 enemies with the Mag 5

Find 80 treasures

Defeat 100 enemies with headshots

Defeat 30 enemies with the Tau Sniper

Complete one Cooperative Multiplayer game

Play in the swimming pool on the Cruise Ship

Find 60 treasures

Successfully counter all of a Brute’s damage-giving attacks

Make five enemies drop their grenade by shooting them

Defeat 20 enemies by shooting from the hip (without aiming with L1/R1)

Defeat 50 enemies with hand-to-hand combat