Unlock Battle Mode: When you have successfully completed the game on any difficulty setting with any ranking Battle mode will automatically be saved to your 'Memory Card' and be selectable at the 'Main' menu.
Unlock Steve Burnside in Battle Mode: On Disc 2 get the Gold Lugers from the basement office (the combination is red, green, blue and brown). He can also be unlocked by playing the original Chris Redfield in Battle mode and performing well.
Unlock Alternate Claire Redfield in Battle mode: Use the original Claire Redfield in Battle mode and Perform well.
Unlock Albert Wesker in Battle Mode: Use Chris Redfield in Battle mode and perform well.
(Note: As I know, It's really hard to use this code) Open your invertory and enter the following code: Up Up Down Down Left Right Left Right + Aim. Then close Invertory and open it again. If you're lucky, all weapons are going to be Unlimited. If that's not works, try holding Aim and then enter the directions above. (As I know, It's only works with the Japanese version)
In the game you have to no some codes to either open doors or get items And here they are. 1 NTC0394 this is for the coomputer in the palace as you come in 2 c+e when helping steve when your in the palace 3 1971 when your are in alfred's office where you put the golden lugers 4 red,green,blue when playing as chris go to the save room just as you come in from the elervater next to the tank go to the draw 5 colling liquid when you play as chris go to the place were get attacked by the baby albinoids then and go to the friezer and put in 12.8c to make the liquid turn blue. 6 when you get to the place were you see the ants go to the room where you put In a code the code is the ab sign spades sign the heart then then crown. Sent in by terminater4