Complete the game on the easy, normal, and hard puzzle difficulty settings. Select the hard puzzle difficulty again and begin a new game to have a new combination of puzzles.
Book Of Lost Memories
Complete the game. Start a new game and look for the newspaper stand near the Texxon Gas Station. The Book Of Lost Memories can be found inside.
Chain saw
Complete the game on the normal difficulty and normal puzzle difficulty settings. Start a new game to find a chain saw among logs before the cemetery.
Completion bonuses
Complete the game. Start another game and enter the extra options menu to access new features.
A "Bullet Adjust" option can be set, allowing the normal amount of ammunition found at a location to be doubled or tripled.
A "Noise Effect" option can be toggled.
Another new option can be toggled, allowing scenes to be viewed without distortion.
Defeating Eddie
In the first battle, equip your rifle and as soon as you get the chance, shoot him four times. He will run away. Follow him into the next room. Get far away from him and just keep shooting until he dies. If he gets in close, run away and shoot him. If done correctly, he should be locked in between shots and you will not get hit.
Dog Key
Complete the game with the "Rebirth" ending. Start a new game and a dog house will now appear near Jack's Inn. Look inside the dog house to find the Dog Key.
Endings
Below are the requirements to get each ending. You may still get an ending even if you don't really try do do these. But if you do all the requirements for a certain ending, you're very likely to get that 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
-Examine Angela's Knife in your Inventory
-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
Extra options
At the options screen, press L + R to display an extra options menu with blood color, map zoom, and other selections.
Hidden skulls in picture
Go to room 307 in "Wood Side Apartments". On the third floor is a picture on the wall. Press A and the message "There's a painting hanging on the wall. It looks like a landscape of this area." will appear. Look at the picture to see two skulls on the side of the mountains.
Hyper Spray
Complete the game two times. Start a new game to find the Hyper Spray on the south side of the motor home.
In-game reset
While playing a game, hold Back + Start.
Innocent Man riddle
One of the rooms you will enter in the Labyrinth will include six men that have been hung by the ceiling. Your job is to free the innocent man in the group. In easy riddle mode, the innocent man will always be, "The Kidnapper". In normal riddle mode, the innocent man will always be, "The Arsonist". In hard riddle mode, the innocent man will always be ,"The Counterfeiter". Once you find out who the innocent man is, pull the corresponding empty noose in the second room to release the body. In his place, the Key Of The Persecuted will be on the floor below.
Introduction FMV sequence audio
If you wait at the title screen for awhile, the introduction FMV sequence will begin. In some scenes, there will be no audio. Complete the game one time and the audio will be restored to those scenes.
Obsidian Goblet
Complete the game. Start a new game and enter the Historical Society building. The Obsidian Goblet can be found on a shelf.
Reveal signs
Unlock all five endings, then start a new game. All signs will now be revealed.
White Chrism
Complete the game. Start a new game to find White Chrism vial in the kitchen of apartment 105 in Blue Creek Apartments.