Beat the game and save your partners to get the special key for the room on the 1F in the house that was locked before.
Change Clothes
Beat the game with Chris or Jill in under three hours. After the credits save the game, then load the game and open the first chest.
Rocket Launcher with unlimited ammo
1/7/2005
Change the difficulty during game (Japanese Version Only)
*The game must have been beaten on Hard to work*At the title screen press R1, L2, R2, L1, X, Triangle, X, Square (If entered correctly, you will hear a zombie moan.) Now while playing the game, hold R1 + R2 + L1 + L2, and press Select to change the difficulty.
1/31/2005
Easily kill zombies
Equip the shotgun and go up to a zombie. Before it grabs you, aim up and fire. You should decapitate it, and you just saved some ammo.