Welcome to my guide. My purpose here is to give you some gentle hints to help you solve the various puzzles yourself.

There were also a few elements I found difficult to see due to being small and/or dark-on-dark, so wiill point those out.

As you'll probably see, there are essentially two independent puzzle chains on this level, which I am labelling "A" and "B".

Description: You've just started this room - there are a few items lying around - some with more obvious use than others.

Note - this object is a little tricky to see.

1. Not everything is on a shelf or table
   
2. This is a stereotypical hiding place, but things usually go under them
   
3. Solution: There is a potted plant to the left of the door - in the soil is a steel key
   
4. So now you have a key, surely it's for a lock - and the locks on the door would be too easy
   
5. Look lower down
   
6. Solution: There is a silver lockbox in the shelf with the record player - you need to use the key specifically on the key-hole in the box to open it. It may be hard to see, but there's something inside to pick up.

Where to go next?

1. Your new object should look familiar; find something that matches

Description: You've used a key to open a silver lockbox to get some clock hands

1. This first part is easy - just look around for the obvious
   
2. Solution: There is a clock on the top shelf of the bookshelf next to the window - use the clock hands on it
   
3. So the clock automatically set itself - the hour hand to eight and the minute hand to twelve. You can't change it, so that has to be your clue
   
4. There are only a few possibilities here but if you look carefully, the clock has a second hint hidden
   
5. Solution: The window by the clock is locked - not only do the hands on the clock (kind of) point to that lock, they also give the combination - eight o'clock or 800

Where to go next?
Something subtle just happened. There was a potted plant by the desk - it has fallen down an is now next to the bed. And you can pick it up.

Description: You've got a potted plant on your hands.

This was my favourite puzzle in this room, but it is a touch obtuse, especially since there are several potentially valid answers and several potential locks. You may wish to complete the other puzzle chain first.

This also depends on colour vision, so I'll provide a non-colour version of the puzzle.

1. On the bottom of the plant is taped a card with some coloured squared and addition symbols
   
2. Where else do you see colour?
   
3. There's an odd colour chart with numbers and symbols on the shelf left of the clock...
   
4. Red Herring: There is a set of paints on the high wooden shelf - that's just decoration
   
5. Red Herring: If you look at the middle horizontal line 3+?+9 versus the middle vertical line 1+?+5 - it can't be a magic square (where each line adds up to 15)
   
6. Red Herring: Nothing about adding red and yellow to get orange, or any "colour math" like that
   
7. Red Herring: If you assume the answer is a combination, then each pair has to add up to 9 or less. This actually lets you "solve" the entire chart (except which order goes into green and red). You'd also be wrong because that's not it either.
   
8. You are looking for a combo, so each answer will be 1-9
   
9. There are no other hints in the room; just the small plant and the colour chart
   
10. The colours only serve as labels and have no other meaning
    
11. The shapes are in fact shapes and not symbols
    
12. The same number value can appear more than once on the chart
    
13. Some shapes are bigger, some are smaller, some convex, some concave. But there is one property that is different in each one...
    
14. Triangle + Square = 7
    
15. Solution: Each shape has the value of the number of corners it has. Thus Red + Green = hourglass + triangle = 6 + 3 = 9. Cobalt + Cerulean = pointy-B + 3 = 5 + 3 = 8. Brown plus magenta = 5 + 4 = 9. And that's the answer 989.

Colourblind Version Of This Puzzle:
Hopefully this'll make things a bit clearer:

• Hourglass + Triangle = ?
  
• Pointy-B + 3 = ?
  
• 5 + Square = ?

Where to go next?
There is only one combolock next near artist's supplies. Use the code on the black lockbox on the right side of the shelf by the potted tree to get the first key - it will unlock the top lock of the escape door.

Description: You are just starting off, and there's something lying around you can use, or rather, get something else to use.

1. Have a look around the room; this one's a bit out of sight
   
2. It's one of the worst places to put something delicate
   
3. By the desk?
   
4. Solution: There is a vinyl LP on the chair by the desk
   
5. It should be pretty obvious what to do next
   
6. Solution: There is a record player past the foot of the bed - use the record on that and see what happens.

Where to go next?
You may have noticed something break off the record player when you turned it on...

Description: You've turned the music on and maybe noticed something fall off the record player?

The first item is very difficult to see - I've left instructions in the "where it is" step below.

1. Did you notice anything happen when you turned the record player on?
   
2. A little bit flew off towards you - have a look for it...
   
3. Where it is: A tiny switch broke off the record player. If you walk right up to the player and square the camera to it, then look down and walk backwards until you hit the round table you should find it. It's black and grey, perfectly in line with the vertical blue strip on the record player shelf and it didn't quite make it to the shadow from the round table
   
4. Okay, so now you have a switch handle. Does anything spark your attention?
   
5. Solution: There is a sparking lightswitch by the door - use the switch on it to change things...
   
6. The room should now be dark with some glow-in-the-dark paint on the walls. If it's not, try clicking the switch again, you can turn the lights on and off
   
7. So you have three numbers, and something else is painted too
   
8. Spoiler: There is a gob of paint on the bedside table - enter 628 to open it up and get what's inside. You may wish to turn the lights back on too.

Where to go next?
You've got a black queen...

Description: You've found a black chess piece...

1. Now that you have the black queen, you should bring her home - the game won't let you put her in the wrong spot.
   
2. Looks like you're also missing a white king (unless you've already found it)
   
3. Solution: The white king is on the middle right of the bookshelf with the colour chart.
   
4. Once you have all the pieces in place, the board will play a short game and open up a secret compartment

Where to go next?
The "pizza slice" shape is a bit unusual, but what else is pointy and has a large hole in the middle? Have another look around the room.

Description: You've found a pointy bit of wood with a large circular hole in it.

I got stumped on this one, even with the in-game hint. Bah :/

1. It may look like stale pizza, but it's part of something else in the room
   
2. On the bed?
   
3. Solution: It's the pointer for the Ouija board on the bed
   
4. Great, so now you have a working Ouija Board, but how do you use it?
   
5. It's not a password or code
   
6. You're not answering a question either
   
7. You're meant to ask a question
   
8. Have another look around; the answer is simpler than you might expect
   
9. Solution:There is a note on the circular table with "ARE YOU HERE?" written on it.
   That's literally what you're supposed to ask. Click, in sequence, on A, R, E, Y, etc.The Ouija board will then give you a code - 359

Where to go next?
There shouldn't be many combo locks left at this point - this one is obvious though.

Description: You've gotten the code from the Ouija board...

1. Look inside the cabinet, what do you see?
   
2. Just a periodic table? That seems a bit dull...
   
3. Have a look around the room more - what else needs solving?]
   
4. Maybe around the clock?
   
5. Under the clock on the bookshelf by the window, there's a lockbox with a red box and a scrap of paper...
   
6. You've got a four-letter code... but that looks like a date with six numbers, you're missing something
   
7. Red Herring: The books by the box have legible titles and authors - it's not that
   
8. Red Herring: It's not a birthday or historical event either
   
9. Red Herring: It's actually not any kind of date...
   
10. What else used numbers?
    
11. Solution:Don't periodic tables have numbers? If 10 in Ne(on), and 19 is K (for potassium), and 53 is I(odine) that gives you NEKI. Use that on the red lock on the lockbox

Where to go next?
Inside the box is the key to the lower lock. If you've already solved the "A" puzzle chain, congratulations, it's time to leave. Otherwise, go look around the room and see what else you need to solve.