Resident Evil

To gain Access to special costumes hold the L and R triggers on controller 2 at the ''July 1998'' screen. While holding them down, press START on controller 1.When the game starts you should have new costumes.

Start a new game and save. Reset the game and at the title screen simultaneously press and hold X, Y, and Z and press start on controller 2. The screen should flash. Press start on controller 1 and go to Options. There should be an option called Battle Game. Select it and load the data from your saved game.

Hold X, Y, Z and Start on Joypad 2. Press start on controller 1. Note, you must have saved the game at least once for this to work.

When july screen comes up hold down the 2 top buttons on cotroller 2 and press start on controller 1 dont let go of the 2 top buttons on controller 2 till you see when barry,jill,and wesker are in the main hall and there will be new clothes on jill.

1) Immediately when you get to the Dining Room at the beginning of the game, exit back to the main hall, and Wesker will say "Investigate if you hear any gunfire", and you'll go back to the dining room.

2) Once in the Dining Room, try to exit again, and this time Barry will say "Lost your courage already? It's not like you!", and you won't be able to exit again.

3) Now go talk to Barry as you normally would.

4) After talking to Barry, head to the grandfather clock and before you can get near it, a zombie will come out of a door and chase after you, Barry will say a pretty ridiculous line, and then reduce its head to a gory pool of blood and brain chunks.

5) After this hilarious sequence, you'll have to go report it to Wesker back in the main hall, but unfortunately, he's gone.

6) Go around the back of the stairs looking for Wesker and when you come out the other side, Barry will talk to you a bit and give you the lockpick.

7) After Barry leaves, go back to the Dining Room, and in through the door the zombie came out of, turn left, then right and you found your old buddie's (Kenneth's) mutilated body, only this time more mutilated, without his legs (or ammunition clips), which will confirm that the code worked.

In the Dormatory, in the room with the beehive, there is a door with a numeric key-pad used to unlock it.
The codes are as follows:

Jill Valentine: 3,4,5

Chris Redfield: 2,1,5

You can use the following passwords for unlocking the doors on the Lab computer:

Login: John
Password: Ada
B2 Door Verification Password: Mole

Simply defeat the game once and the Battle Mode would be unlocked permanently. In other words Battle Mode would be available even without cheat.

To get the Rocket Launcher, you need to complete the game in under three hours. It will ask you if you want to play again. Answer yes and you'll receive the Rocket Launcher with unlimited ammunition.

When playing as Jill, the first Zombie you come across is in the corridor over Kenneth's body. As soon as the Zombie starts coming at you, run into the dinning room where Barry is. Barry will ask what's wrong, and then kill the approaching Zombie. This will save you a few rounds of valuable ammunition.

The first time you fight the snake you don't actually have to kill it. Wait until it's about to strike and run, then grab the moon crest and run away. If you're too late the snake will trap and probably kill you.