Complete the indicated task to unlock the corresponding cheat option. They cannot be used in multi-player mode.

Stopping Power: Earn the "Campaign Award" achievement by completing all single player missions. This cheat allows one shot kills.
Fully Stocked: Earn the "Annihilator Award" achievement by killing 1,000 enemies of any type. This cheat allows unlimited ammunition.
Fiery Death: Earn the "Secret Master" achievement by finding all secrets in the single player missions. This cheat has enemies die as if they had been killed by a charged shot.