Hold [Select] button in the Chapter screen and input the code:
[Right]x2, [Left]x2, [Square]x2: Unlock all levels.
Gordon Boulton: Complete the game once.
Sgt. John D. "BUD" Hawk: Complete the game once.
Sgt. Stan Markut: Complete the game once.
Fuel Plant Map Tips
For super easy kills on the fuel plant map, just get up on to the balcony
overlooking everything and shoot the opposition, also from near where the trains
are, there's a re spawn point then there will be a crate of oil tanks, crouch or
phrone on the right side of the barrels and pick everyone coming down the central
Another tip for both modes is when you have a long range gun: KAR 98K, Lee
enfield. FG42 etc use it to your advantage by going for people that cant see you
or are on the pause menu.
Also on the fuel plant map there are some stacked barrels there are little spaces
in between shoot through their because for the opponent to get you they've got to
be good at the game to aim 100 yard through a small hole that the bullet will
only just fit through.
Last but not least when in multi player if your either anti armour or support you
can dish out ammo to yourself.