Silent Hill 3 cheats and cheat codes for Playstation 2

Unlock Extra options menu:
Press L1, L2, R1, or R2 at the options screen

Beginner option mode:
During game play in normal mode, die twice.

Extra costumes 
Once you finished the game, and get the "extra costumes" option you can enter 
these passwords there: 

Enter HappyBirthday to get the: Heather Shirt costume. 
Enter I_Love_You to get the: Onsen costume. 
Enter PutHere2FeelJoy to get the: Block Head costume. 
Enter TOUCH_MY_HEART to get the: Don't Touch costume. 
Enter GangsterGirl to get the: God Of Thunder costume. 
Enter LightToFuture to get the: The Light costume. 
Enter ShogyouMujou to get the: Transience costume. 
Enter BlueRobbieWin to get the: Killer Rabbit costume. 
Enter 01_03_08_11_12 to get the: Royal Flush costume. 
Enter cockadooodledoo to get the: Golden Rooster costume. 
Enter Princess Heart to get the: Transform Costume 
Enter Shut_your_mouth to get the: Zipper costume.

More costume codes:
Suspense
SH3_Wrestlarn
sLmLdGhSmKfBfH
ProTip
EGMpretaporter
GMRownzjoo
SH3_OPiuM
badical 

UFO ending:
Finish the game and unlock the Princess Heart costume and the 
Heather Beam weapon. Beat all bosses and monsters 
using only the Heather Beam. 

Normal ending:
Beat the game simply by not killing too many enemies. 

Possessed ending:
Kill over 100+ enemies 
Forgive the person in the church 
Take over 2000 points worth of damage

Unlock up to ten Extreme Action Modes (increased difficulty modes):
Finish the game in hard action mode to unlock Extreme Action Mode 1
Finish Extreme Action Mode 1 to unlock Mode 2. 
Finish Extreme Action Mode 2 to unlock Mode 3.
Do it until you unlock Extreme Action Mode X.
After finished teh game on Extreme Action Mode X you will get 
the God Of Thunder T-shirt.

Extra scenes,  
Have a finished saved game file from Silent Hill 2 on your memory card.


Unlock New Weapons

Flamethrower 
Kill more enemies by shooting than fighting.

Beam Sabre 
Kill more enemies by fighting than shooting.

Heather Beam 
Kill minimum 333 enemies or complete the game once in Hard mode

Infinite SMG ammo 
Beat the final boss with a melee weapon. 

Getting Silver and Gold Pipes 
Throw your steel pipe into the sewers.
Answer the following to 3 questions: No, No, Yes.

Green Blood:
Go to extra options menu. Set the blood color to green.

Unlock the Life Bar in extra option screen:
Complete the game on Hard Action Mode and Hard Riddle Mode

Douglas in Boxers 
Finish the game once, choose the "Extra New Game" option.
Press  Up, Up, Down, Down, Left, Right, Left, Right, Circle, X. 
After you select a difficulty and riddle level to confirm the code. 
During the scenes Douglas will wearing a boxer.