Prisoner of War Cheats

Moving stealthily
Press B to walk slower when trying to sneak past guards. Also, avoid hitting objects while sneaking.

Alcohol and cigarettes
Always get alcohol and cigarettes when they are found while exploring the camp. They are required to bribe guards and to get objects and services from other prisoners. They can also be used in exchange for your confiscated equipment.

Rocks
Search rubble piles to find rocks. Press X while in first person view to throw rocks to distract guards. Note: You can only carry a maximum of 15.

Nazi uniforms
If you wear the Nazi uniform while exploring the camp, stay way from higher ranking Nazis. They will be able to detect your disguise.

Free hints
Gain a load of currency and then save the game. Afterwards, talk to the Major which gives you hints. You should get 150 currency to get all three hints. After you have heard these helpful hints, load from the last save point and use the info to help you on your objective. If you keep the same amount of currency, you can do this for the next objective. As you have used the hints but not saved afterwards, at the end of the level the game will not register their use, and you can get a higher grade at the end.

No capture or shooting
Note: This will only work if you save regularly. If during an objective you are shot or captured, load from the last save point. If you save after every objective, you will not have to do those objectives again