Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "options.ini" file in the game folder. Add the following line to the file if it does not exist, or edit the existing line to match:

SET DX_CONFIG_BULLET 100
This sets the amount of ammunition you get when you pick it up. Usually, the game can set it to a maximum of x3.

Completion bonuses:
Successfully 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.

Additional riddle difficulty:
Successfully complete the game under the easy, normal, and hard riddle difficulty settings. Select the hard riddle difficulty again and begin a new game with a new combination of riddles.

Reveal signs:
Unlock all five endings, then start a new game. All signs will now be revealed.

Book Of Lost Memories:
Successfully 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.

Book Of The Crimson Ceremony:
This book can be found in the reading room on the second floor of the "Nightmare" hotel.

Chain Saw:
Successfully complete the game under the normal difficulty and normal riddle difficulty settings. Start a new game to find the Chain Saw among logs before the cemetery.

To get the Chain Saw easier, complete the game under the easy difficulty and easy riddle difficulty settings. Get the "leaving" ending (where he leaves the town with the girl). The Chain Saw will be located in the section just after the first graveyard. You will hear it, and it will be sawing away on some logs.

Dog Key:
Successfully complete the game with the "Rebirth" ending. Start a new game and a dog house will now appear near Jack's Inn and the gas station. Look inside the dog house to find the Dog Key. It is used to open the observation room in the ''nightmare'' hotel.

Hyper Spray:
Successfully complete the game two times. Start a new game to find the Hyper Spray on the south side of the motor home.

Obsidian Goblet:
Successfully complete the game. Start a new game and enter the Historical Society building. The Obsidian Goblet can be found on a shelf.

White Chrism:
Successfully complete the game. Start a new game to find White Chrism vial in the kitchen of apartment 105 in Blue Creek Apartments.

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. Successfully complete the game one time and the audio will be restored to those scenes.

Joke ending:
To view the sixth secret joke ending, use the Blue Gem at Alternate Brook Haven Hospital's garden, the dock before getting on the boat), and room 312 in the Lakeview Hotel. Once you use it in room 312, the game will end and the joke ending will appear.

Hint: 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.

Hint: Box combination:
When you get almost to the end of the hospital area and go down in the elevator, you will get a call on the radio. It is game show which will ask three questions. You must go to the third floor storeroom to get your prize. The combination to the box is 3 1 3. Note: This is for the easy and normal difficulty setting.

Hint: Hidden skulls in picture:
Go to room 307 in "Wood Side Apartments". On the third floor is a picture on the wall. Press Action 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.

Hint: Picture on floor:
After the Angela scene in the Blue Creek Apartment Building, and after you get the knife, there is a picture on the floor in the middle of the room.

Hint: 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.

Use the following trick to kill Eddie with one or two hits. This works for both rounds with Eddie. Get next to him, take out the Great Knife and slice away. If you hit him, he should die in one hit. If not, attack him again. After he gets hit, blood flies everywhere.

Hint: Defeating the Doorman/Angela's Papa Boss:
Obtain the Great Knife (very big sword), in the labyrinth (from the room protected by the pyramid head enemy). Start the Boss battle by immediately pausing game play. Go to the menu and equip the Great Knife. Hold down Ready Attack before the menu screen disappears, and press Attack as hard as possible. If done correctly, you will do your fierce sword attack, and since it requires about two and a half seconds to complete by the time you swing you will have hit the Doorman. Now that it is stunned, just tap Attack to do the lesser swing and kill the Boss. If it does not, just swing the necessary amount of times, and it will die quite easily.

Hint: Defeating double pyramid head enemies:
Use the following trick for a quick and easy way to defeat the two pyramid head enemies at the end of the hotel. This will allow you to defeat them without using any health or ammunition. First, enter the room and start running around it counterclockwise. Let them get fairly close to you and then quick spin around backwards and equip the Great Knife. However, you have to make sure that James is directly next to the wall (with the wall on his left and the pyramid heads attacking from the right). Use the low swinging attack. Since James swings the knife from right to left, the knife will hit them a second time as it bounces off the wall. Keep swinging and they should not even be able to hit you.

Hint: Killing enemies:
When you encounter an enemy, try and get fairly close to it. When it attacks, quickly side step out of the way. Then, face the enemy and attack it with the board with a nail in it. Most of the early enemies you encounter have a slow reaction time after they attack and can easily be taken down with the board and nail. :Note: This is only recommended for use with those types of enemies and should not be used when facing later enemies.

To easily kill a normal monster, shoot it until it falls down, then run up and press Action. James will kick or step on the monster and it will die.

Hint: The "Maria" ending:
In this ending, James walks to Rosewater Park, and finds Maria staring out into the water. They greet each other, and James tells Maria that he likes her, and wants to be with her.

Hint: The "Leave" ending:
In this ending, James is kneeling down beside Mary's deathbed, and is explaining why he killed her. Then, the ending shows James and Laura leaving Silent Hill through the cemetery while Mary's voice is heard, reading her letter to James.