Silent Hill 2 cheats and cheat codes for Playstation 2

Extra options
Go to the options screen, then press L1 + R1. The extra options menu 
will appear. You can change the color of blood, map zoom, etc.

Completion bonuses
Finish the game once, after begin a new game. Go to the
extra options menu to access the unlocked new options.

"Bullet Adjust" option will be double or triple the 
ammount of ammunition at every location.

"Noise Effect" option can be turn on-off.

Reveal signs
Complete all 5 endings, after begin a new game. 
All signs will be revealed.

Location: White Chrism
Finish the game. Begin a new game. Go to Blue Creek Apartments in 
to Room 105. You will find White Chrism in the kitchen.

Location: Obsidian Goblet
Finish the game. Begin a new game. Go to Historical Society building. 
You will find the Obsidian Goblet on a shelf.

Location: Book Of Lost Memories
Finish the game. Begin a new game. Go to the Texxon Gas Station.
Enter the newspaper stand to find the Book Of Lost Memories.

Location: Chain saw
Finish the game on the normal difficulty and normal puzzle mode. 
Begin a new game. You will find a chain saw among 
logs before the cemetery.

Location: Dog Key
Finish the game with the "Rebirth" ending. Begin a new game.
The dog house will  appear near Jack's Inn on the map.
Go into the dog house and pick up the Dog Key.

Location: Hyper Spray
Finish the game twice. Begin a new game. You will find the 
Hyper Spray on the south side of the motor home.

6 men that have been hung by the ceiling riddle:
In easy mode, the innocent man is The Kidnapper 
In normal mode, the innocent man is The Arsonist
In hard mode, the innocent man is The Counterfeiter
If you find out who the innocent man is, pull the empty 
noose in the second room to release the body. 
In his place, the Key Of The Persecuted will be on the floor below.

Box combination in is easy and normal mode:
When you almost finished the hospital chapter you will go down 
in the elevator. You will hear radio call. It is game show which 
will ask 3 questions. Go to the 3rd floor storeroom to get your 
prize. The box combination is the correct answers to game show 
question. (3 1 3)

ENDINGS:
Below are the requirements to get each ending:

Maria Ending
-Immediately go where Maria tells you to go. Do not go the opposite direction or 
make her tell you twice
-Make sure Maria suffers none or very little damage
-Spend a long time with Maria before leaving her in Room S3 3F of Brookhaven 
Hospital
-After you leave Maria in Room S3 3F Brookhaven Hospital, return and check on 
her often
-After leaving Maria's cell in the Labyrinth try to re-enter the room (the white door, 
not down the stairs)
-At the last long corridor before the Final Boss after the Pyramid Head Duel don't 
listen to the conversation and quickly run forward until you reach a door

Avoid the Maria Ending
-Hit Maria with the wooden plank a few times but do not kill her
-In the Inventory Examine the Photo of Mary and the Letter from Mary
-After you meet Maria in Rosewater Park run as fast as you can to room S3 
3F in Brookhaven Hospital

In Water Ending
-Pick up Angela's Knife, and examine
-Read the Diary on the Hospital Rooftop
-After viewing the videotape go down to the Reading Room on 2F of "Nightmare" 
Hotel (Lake View Hotel) and listen to the recorded conversation on the headphones 
on the desk
-Listen to the entire last corridor conversation of Mary sick in bed before the 
last Boss Fight
-Go through the game with Red health status often

Leave Ending
-Recover your stamina(health) as soon as it drops. Try to keep green stamina 
throughout the whole game
-After meeting Maria in Rosewater Park do not head east and do not make Maria 
tell James which direction the Hotel lies
-Listen to the entire sick bed conversation of Mary sick in bed in the last long 
corridor before the last boss fight
-Do everything that is recommended to avoid the Maria Ending

Rebirth Ending
-Collect and have all 4 of the secret items (not including Chainsaw and Hyper 
Spray) in your inventory when you beat the game (have to beat the game at least 
once first). The Names and Locations of the secret items are:
-White Chrism- Blue Creek Apartments Room 105 1F
-Lost Memories Book- In newspaper stand at the Texxon Gas Station
-Obsidian Goblet- Silent Hill Historical Society Museum in the smashed display 
case in the second room
-Crimson Ceremony Book- After you view the videotape in Room 312 
3F, "Nightmare" Hotel go down to the Reading Room 2F and it's behind the 
headphones on the bookshelf

DOG Ending
-After you get the Rebirth Ending you can find the DOG Key in the Doghouse 
in the yard a little west of Jacks Inn
-After you view the videotape in Room 312 3F, "Nightmare" Hotel, use the 
DOG Key on the Observation Room door on the same floor

UFO Ending
Greatest Hits Version only. After you've beaten the Sub Scenario, pick up 
the Blue Gem in the Restroom at the beginning of the game. It is by the 
furthest stall from James. Once you have it you must use it in these 3 
places to receive the UFO Ending:

-"Nightmare" Hospital in the Garden 1F after you've beaten the Hangers Boss
-Right in front of the boat on the Labyrinth dock of Toluca Lake, after 
you've beaten the Eddie Boss
-Room 312 3F Lake View Hotel, right in front of the right window beside 
TV before you watch the videotape
After you do that the game will end and you will receive the UFO Ending.