Unlock Extra Costumes (PAL)
NOTE: Silent Hill 3 has different costume codes, depending on the region; these codes are for region PAL, which includes the United Kingdom and Europe)
Finish the game to access the secret costume passcode screen. Enter the passcodes to unlock a new costume for Heather.
HappyBirthday (Heather Shirt)
I_Love_You (Onsen)
PutHere2FeelJoy (Block Head)
TOUCH_MY_HEART (Don't Touch)
GangsterGirl (God Of Thunder)
LightToFuture (The Light)
ShogyouMujou (Transience)
BlueRobbieWin (Killer Rabbit)
01_03_08_11_12 (Royal Flush)
cockadooodledoo (Golden Rooster)
PrincessHeart (Transform)
Shut_your_mouth (Zipper)
Unlock Extra Options (PAL)
Press L1 + L2 + R1 + R2 on the options menu. Note, that dying twice on Normal unlocks Beginner Difficulty which can only be found on the Extra Option menu.
Unlock New Weapons (PAL)
Unlock new weapons by playing through the game and then doing the following to affect your final score:
Flamethrower:
Kill more enemies by shooting with ranged weapons than by fighting with melee weapons. You can unlock the flamethrower the sure fire way by clearing the game twice.
Light Saber:
Kill more enemies by fighting with melee weapons than by shooting with ranged weapons.
Silver and Gold Pipe:
Throw the normal (steel) pipe into the sewer and answer the next three questions as, "No", "No", "Yes".
Unlimited Submachinegun:
Destroy the last boss in the game with a melee weapon. Easiest if you use a Gameshark device to set Heather's life to "never die".
Douglas Wearing Y-Fronts
Beat the game then highlight New Game (Extra) and enter the old Konami code (press UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, CIRCLE, CROSS). Select your difficulties and a sound will verify the code. Douglas will be sans pants when you see him through the game.
References To SH2 (PAL)
NOTE: This requires a save game that is a PAL version of SH2. The game also needs to be listed as a cleared game.
Using any memory card with a finised/game cleared file from Silent Hill 2 will cause some retroactive interactivity when Heather investigates some areas of the game.
Heather Beam
Kill 333 enemies or more.
Infinite SMG ammo
Defeat the final boss with a melee weapon to enable this option.
View 'possessed' ending
Kill more than 100 enemies, forgive the person at the church and get more than 2000 points worth of damage.
View normal ending
Complete the game without killing too many enemies or doing too well.