Call of Duty: Finest Hour - Cheat mode

Russian campaign:
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.

More amount of ammo:
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.

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

Unlimited Ammo:
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.

Remagen bridge:
When you reach the brige keep to the left on the path and soon there will be a German with a sniper. Kill him and pick the sniper up. Later on in the mission you have to take out the machine gun nests. sniper out the gunners in the towers first then kill the guys behind the sand bags but be warned more gunners keep coming so make shore you kill them all.

Tractor Factory: Easy completion:
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.

Unlock All Artwork:
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.

Big Red Apple:
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.

Weird Dance Party:
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.