Kill 50 enemies in a row without dying

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

Find 40 treasures

Kill 20 enemies with the Desert - 5

Find 30 treasures

Kill 50 enemies with the AK-47

Find 20 treasures

Find the Strange Relic

Kill five enemies in a row with headshots

Kill five enemies with a brutal combo

Find 10 treasures

Find five treasures