Resident Evil 2

Only a couple cheats but they are quite useful.
If you want to play as Hunk(A S.W.A.T member sent to recover the G-Virus.), Chris Redfield(Claires brother.) or Ada Wong (Leon's companion during the game.), complete the hard level using both Claire and Leon.

For unlimited ammo go to the equip screen and press the following keys: up, up, down, down, left, right, left, right, aim button.