Kill 50 enemies in a row without dying

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

Kill 50 enemies with the SAS - 12

Find 50 treasures

Kill 20 enemies with the Desert - 5

Kill 20 enemies with a brutal combo

Kill 10 enemies by aiming while hanging from a ledge

Kill 30 enemies with the M79

Kill 50 enemies with the AK-47

Kill 50 enemies with the Moss - 12

Kill five enemies in a row with headshots

Find 20 treasures

Kill 30 enemies with headshots