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

Defeat 20 enemies with the Pistole

Defeat 30 enemies with Mk-NDI grenades

Defeat 20 enemies with gunfire by aiming while hanging

Defeat 20 enemies with headshots

Find the Strange Relic

Defeat three enemies with one explosion

Defeat 20 enemies with hand-to-hand combat

Platinum

Find all 60 treasures

Kill 50 enemies in a row without dying

Kill 10 enemies with grenades by aiming while hanging from a ledge