Score a x15 multiplier in a Story level.

Complete one Cooperative Multiplayer game

Defeat 50 enemies with stealth attacks

Defeat ten enemies with grenades by aiming while hanging

Defeat ten enemies with propane or acetylene tank explosions

Find all 100 treasures

Kill 10 enemies with thrown-back grenades

Throw back a grenade and defeat two enemies at once

Defeat ten enemies using hand-to-hand combat on the back of the convoy trucks

Defeat 30 enemies with the Mag 5

Defeat 30 enemies with the T-Bolt Sniper

Find 80 treasures