Find 35 treasures

Kill 20 enemies with the Desert - 5

Finish Arcade Mode with a Mortal Kombat Character

Kill 50 enemies in a row without dying

Finish the game in Hard Mode

Finish the game in Easy Mode

Kill 20 enemies melee-attacking from behind

Kill 30 enemies with the MP40

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

Find 25 treasures

Kill 50 enemies with the 92FS - 9mm

Find 20 treasures

Kill 100 enemies with headshots