Kill 100 enemies with headshots

Find 40 treasures

Find 30 treasures

Kill 20 enemies with the Wes - 44

Find 25 treasures

Find 20 treasures

Kill 10 enemies by aiming while hanging from a ledge

Kill 20 enemies melee-attacking from behind

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

Find 15 treasures

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

Kill five enemies with a brutal combo

Kill five enemies in a row with headshots