(if you can, skip even the Steam Store page video/pictures and just try it)

Without spoilers, we can say:
- It is a first-person game about a guy who needs to visit doctor for a brain scan
- It has excellent world building and atmosphere
- Can get quite scary (tho it's more psychology/philosophy than just some "dumb" thriller)
- Is awesome - do not waste the 1st time play-through, therefore this guide!

Style: modern (computers, scanners, machines...).
Gameplay: trying to live your life, exploring, reading, thinking... some tense stealth elements.

Absolutely do NOT play the SAFE mode, play Normal one.

Safe is extremely too easy, any "enemies" do not even attack at all. This makes atmosphere weaker, and even breaks plot in many cases since you wonder if enemies are friendlies or what is going on. We are all scared. This is ok - this is the fun part of the game too!

Even if you are "bad at fighting / bad at stealth games etc" - go for normal mode. If you can walk around in normal 1st person "FPS"-like games, then you will be all right, you will not get stuck on some hard "fights" too long.

- play with headphones
- play alone
- turn on SUBTITLES

- best play at night with dim light
- do NOT set too dark GAMMA, increase it
- and use in-game flashlight (when you can)

- normal difficulty (not safe mode!)
- do not look up solutions or walkthrough, this is really not needed

- take your TIME
- look around. who is talking?
- understand what is going on (more or less, it is hard) before decisions
- read all stuff, before making decisions
- do not randomly click stuff you might miss something suddenly
- do not just randomly pull out CABLES

- reserve free time to play, since game is really immersive
- concentrate on game
- go forward SLOWLY
- there are lot and lots of things to explore in the world
- many situations have multiple solutions (or at least choices), people often miss this at first
- do not do anything hasty, consider options, around and also in "other rooms" of a map

- do not worry about being scared, we all are
- the tense moments will go away, and are usually not that impossible to pass
- you will encounter various characters in the game. Remember - they have different strong/weak sides. E.g. with one character to win you need to not do certain things, while with others you can do it. To put it in other way - try different approaches to different obstacles in game.

- do not worry about getting lost, there is lots of maps, diagrams around
- game "levels" are not "too big" anyway

Be the detective!
- can you solve it? what is going on exactly?
- look at all the texts and images, on computers and on photos/walls and other
- remember names of people (or maybe even write down if you have bad memory for that things, but it works smoothly in game without writing down too)
- perhaps note/remember WHEN events are happening
- many things that you overlook as "random" or "artistic nonsense" in fact have meaning
- talk to everyone (you can talk many times), sometimes dialogs or things change if new things happen. (and some might depend on choices made)

Check out your keyboard
- what is the key for inventory? yes, it doesn't do much
- what is the key for flashlight? do not worry if it doesn't work... yet

Mild spoiler - just general suggestion how to approach types of objects in game:

- read stuff on computers, posters and such
- reading text/image, click "use/look" again to see TEXT of it (if hard to read, e.g. graffiti on the wall)

Few things that one might want to not miss - here I just say in which places of game you should pay extra attention to find some info

- in first chapter - when the generator is turned on, of course stay in that room - do not leave the room before talking on radio

- a bit later, in the room on top - on the radio you might want to first call other stations on radio and only last call station Lambda

- always investigate following type of room: the bathrooms - in one of this rooms, there is a thing to be found. If you want that here I write what object you want to investigate, how ever that should be quite obvious: check out the mirrors. at least in 1 locations they are not broken

Handling "obstacles" in a proper way:

General information:


- you might find various adversaries during your journey. They often behave very differently

A more detailed info what to consider:

- do you always need to look away?
- can you use flashlight or not?
- problems? listen to hints, in some of the places


If you do not have memory for names, maybe even take basic notes about most important few characters, it explains a lot of background.

- make sure image is bright in the recording too, not just on your screen, it's no fun to watch almost black video.
- distractions ruin the game. live chats, popups with nonsense like "thanks for donation" ruin it usually.
- focus on the game
- do not miss important stuff, clues. read things - audience usually wants it as this is all the awesome world-building
- best if you also record yourself (video/face)... you will probably make some interesting expressions...

Actually gameplay is smooth, you will not be stuck for too long.

- no need to look up solutions "online"
- look around more, interact more
- check computers, switches and alike
- if lost, just walk around e.g. in one direction or along wall

Scared? Panicking? OMG what was that noise?!

- still do NOT play the safe mode
- light in room can help
- a short pause can help
- it is ok to curse or scream sometimes ;)

Also check out the other guide: https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=1885423510

Before start:

• be alone and focus (or with friend if you play together)
  
• options: brightness up (but not max), subtitles: ON. Leave distortion and other things.
  
• New game - normal
  
• read all computers; read all notes, photos etc
  
• write down names... and other facts, dates, places, etc - it can help
  
• think before doing

Events - spoilers are marked.
This is kinda walkthrough - but I just list what locations and what not to miss (!!!) because there are some cool moments that someone people omit when playing.

=================
Here I write a bit more about things you might want to consider, to understand what is going on in given situation, and to understand the choice(s) you have.
This is kinda spoilers.

• starting at first big location, after the things go interesting
  
• when you are back at the starting location here, after some events you can read additional computers
  
  
• later, when the computer says like "not enough power - turn off ... 2 locations" read exactly what it says about it
  
• 1st area - in the "dome-celing room" (the room named communication center) - look at all before doing the thing you are supposed to do here; Also, before calling the radio station you should call, try others (hint: you are told to call site Lambda first call others)
  
  
• then few areas that have nothing to miss, this includes the new area (called Lambda) and then you go to few locations, and you try to go out using small vehicle
  
  
• then you are in the next location right after (called site Delta), here: look at chess games and read logs (cool backstory kinda - someone said ok my job here is done, time to move on).
  
• still there (site D), in the room with blood and such - there are 2 texts on wall, and there are ugh.. things on the floor, look. Also, on table a pack of pills.
  
• still there, find and read info about existing "devices" (hint: it is located in building in the HQ) each type is described how it works and who controls...
  
• when the bigger thing shows up and you can leave, reading above information can make somethings more meaningful if you understand
  
  
• next site (called Theta)
  
• there are few audio notes outside, and you can talk. ("we never meet before")
  
• then the large door
  
• (!!!) in this base, there are WCs. Make sure you don't miss a thing. There will be a short 5-second cutscene.
  
• then there will be a challange to solve in basement
  
• finally you open the big door and get to the D... device (the dunbat). Here, when you "start it" then look above to see it (players with very low FOV might not see (it)
  
  
• (!!!) later on you are in the room with the prototype and stuff. There is a big tube with door, you are told this is a scanner. Don't forget to try it. Look at the displays there too.
  
  
• Then you arrive and next big location. You need to open it first. At some point someone is "helping you", or is that a trap? Think about it, it is significant later.
  
  
• At the central location of this building you opened up, there will be something showing up sometimes. I was kinda scared at this point and didn't looked - but it is good idea to take a look - this is different then some of other you meet, it is good to understand which is which.
  
  
• Read all about the black liquid you take, of course
  
  
• There might be (here, or later on) one more chance same as in WC (short 5second animation will play, probably same one - so if you found the on in WC as mentioned above, then do not worry). AFAIR it was in one of "laboratory" rooms.
  
  
• Then there is a big travel... and more travel.. and more
  
  
• You arrive and next big location, with the fat secure round doors everywhere.
  
• You later have locked rooms, you can unlock them in one place. You learn a lot about various people here. Including one person who was focused about solving a problem/the problem. Look through his notes and all. Remember him.
  
• Here, in the "second half" of this location, you get to talk - obviously. It is good to finish all dialog here.
  
  
• Now more walking, and more events.
  
• Now big round thing. Look around, is here a choice to be made or not? Anyway, you decide to do it or not...
  
• Then more walking
  
  
• Finally the location.
  
• Of course, do not miss anyone here (scanner shows just 1, anyway)
  
  
• Finally. Admire the architecture :) It was kinda wow for me.
  
• Well, this is it.
  
  
• (perhaps some things to do, more or less)
  
  
• when it all ends, I took the time on the Credits section to reflect about it all and sit through the Credits. They are short anyway, so I would recommend... and anyway most people seem to feel like it, at this point.
  
  

Well that's it. One more final look at the main menu.

Thanks and I hope you had fun too!