Killzone: Liberation Cheats

Unlockables
Fifty Percent More health:
Acquire 300 Points Faster C4 Placement:
Acquire 100 Points Carry 3 Grenades:
Acquire 20 Points Carry 3 Smoke grenades:
Acquire 140 Points Carry 3 Syringes:
Acquire 60 Points Carry 4 Pressure Mines:
Acquire 220 Points Carry Unlimited ammunition:
Acquire 480 Points Better Close Combat Damage:
Acquire 260 Points Faster Trip Mines Disarming:
Acquire 180 Points Fifty Percent more Health for Buddy:
Acquire 40 Points

Unlockable: Cobar
Beat Hard mode.

Unlockable: General Metrac

To unlock General Metrac, simply complete the game in campaign mode on all difficulties, and get gold medals on all challenge games.