F.E.A.R.

Level select code:
Input F3ARDAY1 as a profile name to select any level to play.

Unlimited handgun ammo:
You need the dual handguns, all weapon slots full and at least
one bullet for the dual handguns to perform this trick.

Equip yourself with the dual hand guns and try to find a weapon you
do not have in your inventory. This weapon must be on the floor!
Hold Square to switch out the dual handguns for the new
weapon, then switch back for one handgun then grab the other.
The amount of handgun ammo should be duplicated.
Repeat the trick, until you reach the maximum of 200.