All Working Medal of Honor: Underground Cheats - Playstation

Master code
Enter "ENTREZVOUS" as a code. The screen will flash green to confirm correct code entry. Return to the entry screen and enter "PORTECLEFS" as a code. All secrets will be unlocked.

Invincibility
Enter "PUISSANCE" as a code. The screen will flash green to confirm correct code entry. Note: The code only has an effect on levels that you have already completed.

Bouncing bullets
Enter "RICOCHET" as a code. The screen will flash green to confirm correct code entry. Note: The code only has an effect on levels that you have already completed.

Panzernacker Unleashed mission
Enter "ENTREZVOUS" as a code. The screen will flash green to confirm correct code entry. Return to the entry screen and enter "LEMONSTRE" as a code.

Alternately, get an "Excellent" rank for the flags of each quest. When you complete the last quest in the last mission, save the game, then go back to main menu. Select "Next Mission" to play the Panzerknacker Unleashed mission. You have to investigate a castle that is filled with crazy super dogs that can drive tanks and half tracks.

DreamWorks Interactive personal screens
Enter "DWIECRANS" as a code. The screen will flash green to confirm correct code entry.

Medal Of Honor: Underground team gallery
Enter "MOHUEQUIPE" as a code. The screen will flash green to confirm correct code entry.

Cartoon gallery
Enter "MOHDESSINS" as a code. The screen will flash green to confirm correct code entry.

Shooting
When you are up against a Nazi soldier, it is best to shoot him in the head. You can also his leg to temporarily paralyze him. When you are facing a tank, use grenades or a turret machine gun.

A Vicious Cycle: Ambush
In the mission "A Vicious Cycle" (the last level of the fourth assignment), there is a secret area along the road. After you destroy the bridge with your demolition charges, go down the road until you see a long stone wall on the right. There is an opening in the hedgerow to allow you to get back there, or you can jump the wall. This is a perfect location to ambush the enemy.

kill
When you reach the bar with the three Nazis (one behind the bar and the other two in front having a drink), choose the petrol bombs and crouch. Sneak up to the bar about ten or fifteen feet away from the Nazis. Note: They will not see you unless you stand up or change weapons. Throw a petrol bomb at the bar. This will kill all three Nazis. Then, finish off the rest of them that appear from behind you, including the Nazi up in the balcony above the bar. Note: To kill the Nazi up in the balcony without getting hit, sneak under him and throw a petrol bomb at the bottom of the balcony.

Hunt For The Desert Fox: Hidden ammunition aid kit
When you have just arrived at the supply depot in a stolen truck, jump out and turn to your right. Keep going until you see another truck. Kill the men that may exit it. Look around that area until you find a box sticking out of the wall that is slightly smaller than the others. Shoot it until it breaks, then go to where the box used to be. Squat down and face the wall. You should see a small crawl space. Go in to find a small area with one first aid kit.

pack
In the Dark Camelot mission, second level, there is a hidden field surgeon pack in the fireplace. After you grab the knife, go down the hall and duck into the opening there. Once you are in the fireplace, go to the back of it and you will climb up the wall. At the top is a little alcove and inside is the field surgeon pack.

Wewelsburg: Dark Camelot: Valhalla hidden area
Play the Valhalla stage in the Wewelsburg: Dark Camelot level. When you reach near the end of the level, before you go to the right you will see a picture of a "red knight" riding a horse on the wall. Do not go down that way just yet. Instead, go to the area to the left of the picture. Once there, you will see three wall-lamps. Press "Action" to move the lamps, then turn the lamps in the following order: Middle, Left, Right. Then, turn to your right and a secret room will open. You will find one box of Rifle rounds, one box of crossbow rounds, one 44 stg assault rifle rounds, and two field surgeon packs inside the room.

Wewelsburg: Dark Camelot: Quicker crossbow
Press [Square] after shooting the crossbow to reload faster.

Wewelsburg: Dark Camelot: Alternate levels
Enable the "Unlimited ammunition" code, and complete the previous level to one that you have not played. After winning, save your game, and play that next level. You will not start with the cheat, but will have 999 rounds for your weapons and 99 grenades and bazooka rounds. Though the cheat is not enabled, you will never run out of ammunition.

Flushing out hiding enemies
Whenever an enemy is taking cover and about to shoot you, throw a Stick Grenade past them then shoot them when they go to kick it. For example, in Mission 1, Level 3, when you take the second gun and Nazis show up, all you need to do is throw a grenade at them to flush out the Erwins.

Killing enemies in disguise mode
Get very close to the enemy and he will ask for your pass or papers. Give it to him then hold [R2]. He will pose for the picture. While keeping [R2] held, press [Circle] to draw your pistol. Fire immediately and the man should die.

Killing knights
The knights in armor encountered in certain levels can be easily killed by shooting them in the feet.

When on any level with knights, use your crossbow and aim at their helmet. Fire and it will kill them automatically. Then, press [Square] to reload faster.

Dealing with tanks
Tanks patrol certain areas you come across. They cannot be destroyed with automatic weapons such as submachine guns and pistols. Each area has a mounted machine gun. Be very selective about your weapon inventory. Each tank is very tough and armored. Do not try throwing petrol bombs at it. If you are at the front, strafe to avoid the explosive shells. Once the tanks turret has located you, moving and the shell will explode on the surface or a wall instead of you. The front firing machine gun is what you have to worry about. If you strafe, it can still hit you with its bullets. Try killing any enemies that are nearby then deal with the back of the tank. This will make you immune to the machine gun on the front. The weapons that the tank fears most the Anti-Tank Panzerfaust and Grenades. Make sure you not close to a wall before you fire the shell or you could go flying against a hard surface.

You can jump on top of tanks if you are in the correct position, usually from the back. This works well if you are invincible. If you are not, make sure that all nearby enemies are dead while you are attempting this. If you are not invincible, shoot the tank until it explodes. If you are invincible, you can throw petrol bombs directly on the top of the tank to destroy it.

Glitch: Jump through walls in Catacombs
In the Catacombs where you find the forged papers, you can jump through the brick walls if you are lined up correctly.

A Vicious Cycle
When you get to the bridge that you have to destroy with the demolition charges, crouch and move forward on the bridge. You will fall through almost as if there was a hole in the bridge. However, if you run over the bridge you will not fall through.