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

Kill 50 enemies with the Moss - 12

Finish the game in Easy Mode

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

Kill 50 enemies in a row without dying

Kill 50 enemies with the 92FS - 9mm

Find 25 treasures

Kill 20 enemies with the Desert - 5

Kill 100 enemies with headshots

Kill 20 enemies with a brutal combo

Kill 50 enemies with the AK-47

Kill 30 enemies with headshots