Find 40 treasures

Kill 20 enemies with the Desert - 5

Kill 50 enemies with the Micro - 9mm

Kill 20 enemies with the Wes - 44

Kill 50 enemies with the AK-47

Kill 100 enemies with headshots

Kill 30 enemies with the M79

Kill three enemies with one explosion five times

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

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

Find 10 treasures

Kill five enemies with a single punch, after softening them up with gunfire