At the level select screen hold Up on controller two and on controller one press Start, Select, Select, Square

In the Russian campaign, right at the beginning of the mission Operation Little Saturn, turn left and find a scraggly tree all by itself along the embankment. Go over/through the embankment just right of the tree, and then turn left and find a road that leads away from the rest of the board. After a while you will see a huge red apple in the distance. You can drive right through it to find something else that doesn't belong in a WWII game.

Successfully complete the game under the easy difficulty setting to unlock the "Big Head", "Ricochet", "Head Shot", and "Ricochet All" cheat options. The remaining cheat options can be unlocked by completing the game under the other difficulty settings.

Normally, all guns carry a nominal maximum of reserve bullets (i.e., MP40 carries 32 in the magazine and 160 rounds in reserve). You can exceed this maxima for your non-default guns by dying and restarting from a checkpoint. The game will assume that you still carry the gun you previously had (i.e., MP40 in this example) and allow you to collect ammo for it even though you do not have the gun in your possession. When you do choose to pick up the gun you've had on your previous play, you will find that you'll have more than the normal amount of ammo for that weapon.

On the first tank level in the Russian campaign, it is best to use first person view to shoot the Nazis that have Panzershrecks and MP-40s. The MP-40s cannot hurt you, but are annoying. If you use third person view, you will miss.

When you get up to the sniping area, crouch down in the window. There will be some ammunition and health in the corner if needed. Get it if desired, then snipe the first wave of soldiers with normal guns. When your "comrades" say that there are Panzershrecks, concentrate all of your fire there. Do not worry about the regular soldiers because they cannot aim well. Shoot the Panzershrecks until you see a man running up the road with a heavy machine gun. Shoot him then go to the left window and continue.

Pause the game, then press R1, Circle, L1, Square, Circle, R1, Right, Right, Circle, Right. The game will return to the main menu if entered correctly. The "Unlimited Ammo" option will now appear.

Pause the game, then press R1, Square, R1, Square, Circle, Left, R1, Left, Left. The game will return to the main menu if entered correctly. Enter the "Extras" menu to see an option to unlock all artwork.

Head to the second level of the Western Theater (the stage is entitled 'Underground Passage').

At the very end of the level, you will approach a hole in the brick wall (after killing the final two or three Nazis) that will be the obvious exit out of the tunnels. Don't go through the exit. Rather, walk backwards (retreat) past the last alcove, to the second from the last alcove on the left. Look carefully. You'll notice that this is a boarded-up side tunnel.

It takes about four (or more) grenades to explode the opening. Grenades are apparently the only thing that will destroy the 4 or 5 planks loosely covering the opening.

Once open, head down the tunnel. It's just a few feet and a couple of turns to the dance party. Incidently, there are 7 characters dancing around. 5 Germans, 1 Brit and 1 Russian (Tatiana).

Also, you can interact with the phonographs if you move behind the table. You'll see a radio(?) symbol appear (in the same way the symbol for moving your comrades appears). When you press 'x' you'll hear a record scratch sound (not terribly impressive).

There is also a M1919A6 machine gun that you can pick up in the room. Stay awhile, watch'm strut their stuff. The Russian woman takes the cake with some wacky break dance moves (there's even cardboard on the floor).