Defeat ten enemies with propane or acetylene tank explosions

20 times in a row, pick up ammo while rolling

Defeat ten enemies in a row, alternating hand-to-hand combat and gunplay

Finish the game in Hard Mode

Finish the game in Easy Mode

Defeat 30 enemies with the Mag 5

Kill 10 enemies with thrown-back grenades

Throw back a grenade and defeat two enemies at once

Defeat 30 enemies with the Tau Sniper

Find 60 treasures

Defeat 20 enemies by blind-firing while in cover (without aiming with L1/R1)

Defeat 30 enemies with the Mk-NDI