Purchase all GrummelNet Weapons.

Kill 5 enemies with a single grenade.

Complete 'I'm Free - Free Falling'.

Defeat 14th Colossus

Kill 2 enemy helicopters without getting hit in a Special Ops Survival game.

Survive 1 wave in a Special Ops Survival game.

Defeat 30 enemies with the SAS - 12

Defeat ten enemies with propane or acetylene tank explosions

Hit three enemies with fish in the market

Defeat 100 enemies with headshots

Finish the game in Easy Mode

Defeat 20 enemies by shooting from the hip (without aiming with L1/R1)