Press Square(2), Circle(2), L1(2), R1(2), L2(2), R2(2) at the main menu. There is no confirmation message. Start a game, then pause and enter the options screen. The "Cheats" option will be unlocked at the options menu, with "Trooper Level", "Enemy AI", and "Mission List" selections.
This code requires a USB keyboard. Press K to toggle damage while playing a game.
Display Debug Position and Rotation
This code requires a USB keyboard. Press L to display your position and rotation while playing a game.
This code requires a USB keyboard. Press Y while playing a game.
Pause Game Play
This code requires a USB keyboard. Press X to freeze the game while playing a game. Press Start to resume.
This code requires a USB keyboard. Press \ to toggle the menu while playing a game.
Rescuing Your Teammates
If a member of your team goes down, he will fall to the ground and will not be able to move or defend himself. When the first health meter is gone, that teammate will fall to the ground and a dark red health meter will take the place of the normal health meter. This health meter will slowly diminish. It is critical that you eliminate all hostiles around the downed teammate before you advance to try and save him. if you do not eliminate all the hostiles, another teammate might be taken down trying to save the first one. Be quick because the downed teammate will not last for long. Once it is safe, equip the medkit, stand over him, press R3, look at him, and press X. This will heal him and he will be back in action.
Spreading Out Munitions
Do not give too much of the powerful items such as tank mines, C4, anti-tank guns, etc. to a single person. If you have this person advance and he gets taken down by a tank, your other teammates might not have the firepower needed to even get close to the downed person, let alone heal him. It is always a good idea to have each teammate equipped with at the least one high powered explosive in case you need to take something out.
Weak Spots on Tanks
All tanks have very heavy front and side armor. However, the tank's rear is lightly armored. Smaller tanks can be hit with a rocket almost anywhere and will usually explode. However, larger tanks must be attacked with an explosive from behind. If you shoot it from the front or side, chances are you will not even make a dent.
Last Resort Attack on Tanks
If you need to take out a tank but have no more long range rockets, it is possible to get close to it without getting hit. First, you will need to have a sniper rifle to zoom in on the top of the tank to take out the gunner, if there is one. After he is down, throw a smoke bomb in the direction of the tank. Try to get the smoke bomb in as close to it as possible. While the smoke is in the air, you can run up to the tank without being hit. The smoke will make it impossible for the tank to see you. Get directly next to the tank and plant a C4 next to it. After it is planted, throw another smoke bomb slightly further away from the tank. Make a mad dash for the smoke. If you are fast enough, you will get behind the wall of smoke and can then make your way to safety. Then, detonate the C4. If you have C4 with a detonator, run to the tank, crouch, plant the C4, then quickly run away. When you get about 10 feet away, use the detonator to explode the C4.
Last Resort Attack on SCUDs
SCUDs can be blown up with the sniper rifle if they are in the launch position. Shoot the rocket a few times with it.
Charge The Enemy
The game sends an infinite amount of troops after the alarm has been set. The best way to defend yourself is to charge ahead as fast, but also as safely, as possible. In some levels you can cut down the number of men by almost fifty. If you are low on ammunition, health, etc., this is a good way to cut down on the amount of men you have to deal with. It also works sometimes if you send a man far ahead and hold him there, then do your objectives for your mission.