Find 55 treasures

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

Find 40 treasures

Find 35 treasures

Kill 50 enemies with the AK-47

Kill five enemies with a brutal combo

Kill 100 enemies with headshots

Find the Strange Relic

Kill 50 enemies with the PM - 9mm

Kill five enemies in a row with headshots

Kill 10 enemies with headshots

Find one treasure