Kill 10 enemies by aiming while hanging from a ledge

Kill 20 enemies with the Desert - 5

Kill 20 enemies with Mk-NDI grenades

Kill 50 enemies in a row without dying

Kill 50 enemies with the Moss - 12

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

Kill five enemies in a row with a brutal combo

Finish the game in Hard Mode

Finish the game in Easy Mode

Kill 50 enemies with the M4

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

Find 55 treasures