Unlock the following cheats in Single-Player mode by completing the corresponding tasks:
CHEAT - HOW TO UNLOCK Fiery Death(enemies disintegrate) - Earn the "Secret Master"achievement by finding all secrets in all single player missions. Whenthis cheat is activated, enemies die as if they were killed by acharged shot. Fully Stocked(infinite ammo) - Earn the "Annihilator Award" achievement by killing 1,000 enemies. Stopping Power(one-shot kills) - Earn the "Campaign Award" achievement by completing all single player missions.