Find 40 treasures

Kill 20 enemies melee-attacking from behind

Kill 20 enemies with a brutal combo

Kill five enemies in a row with a brutal combo

Finish the game in Hard Mode

Finish the game in Easy Mode

Kill 30 enemies with the M79

Kill 30 enemies with the Dragon Sniper

Kill 50 enemies with the 92FS - 9mm

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

Find 20 treasures

Kill 20 enemies with the Wes - 44