FWIW: I encountered the Closet Visitor while playing on the original PC release so this list might be a bit inaccurate.

Someone should just use a guide to try to trigger all of them and check each of them if it's in there or not.

I would post videos from youtube, but I'm so new in the forum that I'm not allowed to do that.

I remember this as well.

I have beaten the game with the shabby doll in the chest since I first took it from Walter, and the chest haunting didn't happen.
So I assume it's not in the game.

Is it sure you have done every step to reproduce the haunting?
Is it reproduced with the same exact steps in the PS2 version?
Would you write to the GOG support?

I have created a ticket to them about the issue. Please support this issue or create new tickets about this. I want the attention of GOG to solve this.

https://support.gog.com/hc/en-us/requests/747847?page=1&product=gog

I asked GOG whether any of the tweaks they'd done for this release included the tweak to restore the hauntings that had apparently been disabled (but are present in the code, and apparently restored by one person) by a glitch. This is the reply, for info:

"Hello,
I'm afraid that GOG support is not the best source to ask about gameplay related questions. For such please reach the game's official support.
We are aware of the discussion regarding "hauntings" and we are investigating the topic. As for now we can't promise anything. If the GOG game will be updated we will provide update as soon as possible.
Regards,
GOG.com"

I'm glad they're "investigating the topic". Maybe it's an easy fix, and we'll finally get a port worth paying for.
It's more than Konami ever did.

Bit of a nonanswer but it's something. What's the source on them being in the game's code but not enabled?

https://www.youtube.com/watch?v=HxXpuyL9JDU
In here someone changes the memory of the game, which triggers certain hauntings, which is normally can't be triggered.

https://boards.4channel.org/v//thread/527267985/silent-hill-thread
In here, someone created a save file for the PC, where almost all of the hauntings are there, but it can be seen only temporary (in this exact save file), so they can't be triggered in normal gameplay.

Now that's interesting. One wonders why they they don't work. Is there a reason they can't be modded in to appear as normal?

As I know (I asked this from GOG, and also kdgog asked this), they are working on this right now. Hope they will be able to solve this.

Just so people are aware since this thread is full of misconceptions and half answers:

The hauntings are in the game code just like they are in the original PC release. However, these hauntings have a bug where their trigger is broken. You can activate the hauntings with a hex editor, but in order to have them trigger properly within the game their trigger functions would need to be located and fixed within the game's executable.

This is something that in the past has never been done. It has been looked into, but so far nobody has been able to do it. It's had people tinkering with it for over 15 years and we still have nothing. I don't expect GOG is going to magically be able to fix what the community hasn't been able to do in 15 years.

At this point, a true patch might not come unless Konami actually hands out the source code to someone else to fix and recompile or if they do it themselves. But as we know, that will NEVER happen. Konami doesn't make video games anymore and they will hoard their IPs to the grave. It's all pachislots from here until the end of time.

I found this and was looking to see if anyone had tried, I am going to do a playthrough of it and will let you guys know how it goes. The channel I found it on is someone who is really into Modifying and learning about Silent Hill code
and I believe he knows what he's talking about. Anyways, if/when you try it make sure to read the instructions.

More detailed instructions incase it helps anyone:

1. Download "Ultimate ASI Loader (32-bit version)."

Download Link:
www github com/ThirteenAG/Ultimate-ASI-Loader/releases/download/v4.68/Ultimate-ASI-Loader.zip

2. Extract Ultimate ASI Loader.

3. The extracted file should be "dinput8.dll". Rename the file to "dsound.dll".

4. Place the "dsound.dll" file into the Silent Hill 4 game folder.

5. Download "Silent Hill 4 Haunting Fix."

Download Link:
www github com/HunterStanton/SilentHill4Randomizer/releases/download/beta-0.2.1/SH4.Randomizer.0.2.1.zip

6. Extract "Silent Hill 4 Haunting Fix" to the Silent Hill 4 game directory. You will have a new folder called "scripts".

7. Open the "scripts" folder and open the file "randomizer.ini".

8. Set "RestoreHauntings" to 1 and everything else to 0. Save file.*

9. Play game.

10. Reply to thread with your expierience.

Silent Hill 4 Haunting Fix (fix is called "Silent Hill 4 Randomizer") GitHub Page:
www github com/HunterStanton/SilentHill4Randomizer

Ultimate ASI Loader GitHub Page:
www github com/ThirteenAG/Ultimate-ASI-Loader/releases

Hunter's Youtube Channel:
www youtube com/channel/UCwucWHS7bqnYDFFnOP1dzWA

*The text below is exactly how the "randomizer.ini" file needs to look:

[MAIN]
; logs all damage received
LogDamage = 0

[GAME]
; restores the hauntings from the PS2 version
RestoreHauntings = 1

[RANDOMIZER]
; gives you a random player model
RandomPlayerModel = 0

; randomizes all enemy spawns
RandomEnemies = 0

; randomizes all weapon and consumable pickups
RandomItems = 0