Defeat 30 enemies with the Wes - 44

Defeat ten enemies with grenades by aiming while hanging

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

Defeat 50 enemies with the Micro - 9mm

Finish the game in Easy Mode

Defeat 70 enemies with the M4

Defeat 100 enemies with headshots

Defeat 30 enemies with Mk-NDI grenades

Find ten treasures

Defeat three enemies with one explosion

Defeat 20 enemies with hand-to-hand combat

Earn at least 1 star in 11 different Special Op missions.

Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops.