Unlock all four endings and Eileen's alternate costume on a single game save. Start a new game and select Eileen's nurse costume. Cynthia will wear her alternate costume.
To see Cynthia in some sexy lingerie, you must complete the game four times.
Alternate Eileen costume
Start a game in "Brand New Fear" mode. Continue until the "Outside of Room 302" part of the game. Enter Room 303 and search it for Eileen's nurse costume. Collect it and complete the game. When you start a new game, you can now have Eileen dressed as a nurse.
Ampoules
Ampoules are the best of the healing items. There are two Ampoules that can be found. One is in the storage room on the first floor of the Hospital World. The other is in the bathroom inside Room 106 (the second time around the Apartment World). Save these for the final battle; they will help, especially under the hard difficulty setting.
Avoiding dogs
The dogs of Silent Hill can be annoying. They are fast and inflict good damage, especially under the hard difficulty setting when they attack in a group. However, you can get past an area infested with dogs by simply walking. As long as you do not attack one or walk up to one, you should be able to pass unhurt. This is very useful in the beginning of the game under the hard difficulty setting, as there are lots of dogs and no good weapons on hand. A good example of this trick would be this. If you run while on the platform (where Cynthia is shouting over the intercom), a group of dogs will jump out of the subway car and attack. If you walk, no dogs will appear from the car and you can proceed to the escalator with no damage. Note: This will not help with all enemies, just the dogs.
If you kill an enemy in an area infested with dogs, they will all run over and suck the blood from it, allowing you to get past them easily. Note: If you step in front of one, it will attack you.
Batting practice
When remaining idle with the aluminum bat is equipped, Henry will begin to practice his swing.
Brand New Fear mode
Successfully complete the game under any difficulty. Save the game after the credits complete to unlock the "Brand New Fear" option.
Call restaurant
When you look out your window, you can see the phone number of a restaurant. You can use the phone to call that number for fun.
Chainsaw
Start a game in "Brand New Fear" mode. After entering the Forest World for the first time go to Jasper's car. Search near by for a cut tree trunk. Look next to it to find the chainsaw.
Defeating "victims" or ghosts
The best way to take care of the "victims" is to use a Sword Of Obedience or Silver Bullets. If have none of these items you can only hope to find one or two.
Defeating the Wall Monster Boss
Once you have found the correct Wall Monster, equip a strong weapon for Eileen (i.e. the chain or submachine gun). Then, attack it with a charged rusty axe hit, and keep pounding it with light attacks. While you are doing that, Eileen will help out, which drastically increases the amount of damage the Wall Monster receives, thus making the battle very easy.
Eileen's behavior
When you are about in the building world for the second time, sometimes Eileen will act like the little kid and at other times act as if being attacked by a demon or act like a demon. Note: If you are near Eileen when she acts like a demon, it will affect you health.
Eileen's damage
If you allow Eileen to take enough damage, her appearance will change for the worst, and she will walk faster towards the pool in the final battle.
Eileen's Special Gift
Once you get to the wish house, after it has burnt down the mysterious writing in blood can be read aloud by Eileen. After some adjusting she will say "Okay...here goes..." and read the words.
Endings
To get different types of endings, you must do one of four things. Either clear your apartment of ghosts before the final battle, or do not; and let Eileen die or not. These two course of actions create four different endings.
Exorcise apartment
When the ghost tries to come in, place Holy Candle(s) around it. This will destroy the ghost and will cost one candle. You can put candles only near some locations. There is always a location near the ghost where you can place one.
Full Weapons/Apartment Replenish mode
To unlock this mode you must have a 10 star ranking in One Weapon mode. Full Weapons/Apartment Replenish Mode has the following features. At the start of the game, upon entering the subway system you will see that each and every weapon is laid out in front of you. You can grab every one of them. Also, whenever you return to your apartment, you will find six boxes of bullets in the laundry room as well as ten Health Drinks in your refrigerator.
Ghost Cynthia and the candle:
Unlike most ghosts, if a candle is placed in front of the ghost Cynthia, she will stand in place and scream as her hair begins to float in every other direction. Other ghosts simply fall.
Ghost Richard's attacks
Richard is immediately seen when revisiting the store. His attacks are irritating to dodge due to his teleportation habits. A way to stop him from attacking you momentarily is to stand against the wall. He has a tendency to appear behind you. Put your back against the wall and swing at him. If done correctly, Richard will counter attack by teleporting inside of the wall. This will cause his attack animation to repeat itself once the attack gets halfway near you for a few seconds. Use that time to use the sword, or run.
Guns
The use of guns is not necessary. It is quite easy to use melee weapons throughout the game. Also, using guns on ghosts prove ineffective unless the bullets are silver.
Help Eileen with candles
Use Holy Candles near Eileen it. They make the red disappear for awhile, and may also heal her.
Leave Eileen behind
When you are in the building world part two, use the following trick to finish this scenario quickly. After the scene when Richard Spectre appears in front of you, take the elevator and go to the bottom floor (by using the bottom button). Go out the elevator door (do not take the stairs). Once out, you can see the corridor to the other side of the bars. Then go into the elevator, leaving Eileen behind. You can now continue to the stairs and pass through this corridor. You can see Eileen like a animal on the other side. When you pass this corridor in the another scenario, you must wait for Eileen because she is running behind you like she was there all the time.
Mannequin body parts
When you enter the forest for the second time, go to the corner with the torch. Take the torch and take it to your laundry room in your apartment. Use the oil found on the workbench inside there on the torch. When you return, you may light it when you approach the other torches pressing [Action]. This is used to see down each well that happens to be in each corner of the map. Be cautious however, if you use the torch to attack or unequip it, it will go out. This causes you to turn back to light it. Killing all of the enemies first and running from the man chasing you is recommended.
Midwhich Elementary school bus
When looking out of your window during the day, you will notice a school bus. If you look close enough, you will notice it is A Midwhich Elementary school bus. This is a reference to the original Silent Hill, where it is the school in which you visit within the first thirty minutes of the game.
One Weapon mode
Successfully complete the game with a rank of 10 big stars.
Pet shop massacre
In Building world (second time), outside the pet shop there should be pieces of paper scattered about. Walk up to one and press [Action]. If done correctly, Henry should read it. It will be a news report on a massacre which happened at the pet shop, in which all the animals were gunned down by machine gun. Once you have read it, you should hear animal noises and gunfire coming from the shop. Enter the shop to find blood everywhere, gun holes in the walls, and animal cages spread out everywhere.
Prison: Kitchen light
If you want to turn on the kitchen lights, you must make the three holes in each floor above each other leading you to the kitchen. You can only move the holes of the third and second floors. If it did not work, try another three holes above each other leading you to the kitchen.
Prison: Ladders
While in the prison, always use the ladders. This saves time, and taking the stairs leads to being attacked by enemies. The only reason the stairs are there is that so that Eileen can get up and down. The only time not to use the stairs is when you are going after Andrew DeSalvo's ghost for the generator room key.
Prison: Rotating levels
When rotating the second and third levels of the prison, do it as follows. Turn the handle four times to the right on the second floor, and two times to the right on the third floor. No matter what difficulty level you are playing on, this will always work.
Radio clues
Notice the suspicious radio in Henry's living room. At certain parts throughout the game, you will be able to listen to certain broadcasts. Listen to them carefully as they will be part of the story and clue you into what is going on. After you finish the subway, take out the chocolate milk and keep it in your inventory; then save and restart. When you reload, look through the front door peephole then go to the radio for a broadcast from Washington. They will talk about a 3 year old boy.
When you first use the radio in your living room, a report will come on about a man who was arrested for being naked and urinating in public. The name of the person is Suguru Murakoshi. He is the director and scenario writer of the game.
Saint Necklace
Wearing the Saint Necklace, it has two usesl to keep your "ghost sense" from causing actual damage, and to actually exorcise spirits from your apartment. When wearing it in any other world besides the apartment, the screen will do its usual haziness when ghosts appear, but nothing more until the necklace breaks. Keep in mind that the necklace will break if you are confronted by ghosts for too long. Wearing the necklace and running to a possessed area of your apartment will cause the spirit to fight back, but if the necklace is not already broken, the spirit will lose and disappear. Keep in mind that you must have your apartment completely exorcised for the good endings.
Silent Hill 2 reference
Billy and Miriam Locane are the two kids mentioned in the article found in the trash in Silent Hill 3.
Walter Sullivan was the man that was mentioned in a newspaper article in Silent Hill 2. The article stated that he killed Billy and Miriam Locane with an axe, and later stabbed himself in the neck with a soup spoon when they took him to jail. The spoon was found buried two inches in his neck and he was dead from blood loss.
Keep looking at the picture of Toluca Lake above Henry's couch. Examine it and at one point he should mention the superintendent telling him that his son and daughter-in-law went missing in Silent Hill a few years ago. The superintendent's surname is Sunderland, and he is most likely talking about James Sunderland, the main character of Silent Hill 2.
Silent Hill 3 references
Before you complete Apartment world, look through the hole into Eileen's room. You will see a rabbit doll from Silent Hill 3 slumped on a table. However, after Eileen is attacked by little Walter, the doll will now be looking at the peek hole and pointing at you.
Look out of the window of the living room section of apartment 302 when you are able to. In the sky floating over the buildings, there is a large balloon that is one of the bunny creatures heads from Silent Hill 3.
Sometimes when you look outside of your window, you can look up and see a floating rabbit that resembles the one from Silent Hill 3. Also, when you look in the hole in the wall to your neighbor's house after she gets to the hospital, you can see the same rabbit.
Silent Hill reference
There is reference to little Alessa from the original Silent Hill. At the central area in the forest of Silent Hill, inside the Wish House front the cupboard, you can read the following: "There's scribbled note. Have you found Alessa yet? How is Walter´s progress coming along? Send me a report."
Strange sights
In the little rooms outside of the long spiral staircases in the second part of the game, you can sometimes see some interesting things (i.e. a swinging corpse, a sheep and a dancing baby).
If you look outside your apartment window during the evening time, you can see a head floating upwards in front of the window. Note: You do not have to examine the window; just look outside of it from the middle of the room).
Submachine gun
Successfully complete the game with a rank of at least 9 big stars. Start a game in "Brand New Fear" mode and look in Room 202 in the Apartment World to find a submachine gun for Eileen.
Sword Of Obedience
There is no need to waste a sword if you are just entering areas for items. Instead, knock the ghost down and stab it with the sword, get what you need, and take the sword back. After taking the blade out, you have five to seven seconds to leave without your "ghost sense" ringing out.
The Man's Doll
When a strange man places the doll on the stairway, do not take it. It actually makes things worse for you afterwards. If you place it in your storage box, babies will appear above the box, making it difficult to check your items. Your only choice would be to hold it in your inventory, but it requires a slot that you may need.
This item has no use at all. When you get the doll, put it in the box by Henry's television.
Turn corners shaper when running
To make Henry turn corners more sharply while running, release [Run] then turn. After you change directions, you can continue to run. This works the best on staircases like the tight ones in the Building World.