The Saboteur cheat codes:
About halfway through the game you get a mission to knock
out a large gun across the river from the Eiffel Tower.
Nearby on the same building is a smaller Anti-Aircraft gun.
If you eliminate all the guards nearby but leave the AA gun intact,
when the mission is completed you can use the AA gun to shoot down Zeppelins.
This will give you a level 5 alarm which starts a series of airplanes
strafing you. Zeppelins earn $50 and planes $100 when shot down,
which is pretty easy, and seem to be unlimited so it's easy to
keep racking up the cash for as long as you want. Once you've enough
for the time being, just hop off and die. When you return to the HQ
you'll have lost your weapons but have plenty of cash to buy more.
This can be repeated as often as you want in the game as long
as you don't destroy the AA gun.
How to unlock the Nazi Knife:
To enter in this code, first open The Saboteur then proceed
to press [F4] to bring up the code entry box.
Then type in the code provided.