

Was not able to install game
Works perfectly

FPS limit to 40
Seems like an interesting game! Looking forward to playing more! Videos wouldn't play with the default Proton version. Switching to GE 9.27 fixed it. I tried experimental like other people suggested but it didn't work either.
The dev seems to be aware of the issue and is trying to fix it.

Fullscreen toggling makes the game 'hang', req. force quit.
Fullscreen seems problematic even under GE.
The way I found to fix it is to start with "PROTON_USE_WINED3D=1 %command%". You can then make enough progress to toggle off fullscreen in Settings->Graphics.
Once you've managed to switch the game into windowed mode, you can exit and restart it without this workaround.

Some suggest videos need experimental or GE to play but I had no issues. I use experimental anyway usually, but I chcked just to make sure.

Like other said, base Proton or Proton Experimental does not show Cutscenes, not only the one at the beggining, need to instal GE-Proton, I tested with the 9.27 and worked perfectly

45fps tdp 10w
a little choppy sometimes

Reached credits without running into any significant issues.
One music track had a noticable static popping in a certain area when it looped. This may not be a linux issue, and happens rarely enough it was completely managable for me.

Requires launch options to start properly
PROTON_USE_WINED3D=1 %command%
Does not make progress unless "PROTON_USE_WINED3D=1 %command%" is used.
Intro video does not play. Hold ESC to skip.
red pixels surrounding some menu item text, bright red/green/blue pixels on some object outlines in game at certain angles/distances

Works Out of the Box
Played for around 2 hours, 4K 120FPS, no issues.
Works out of the box, no tinkering required

40hz refresh rate
Just installed in Steam and launched without issue.
limit fps 40 and tdp to 10

The Steam Verified statement said that there is small text that may be difficult to read. So far, I have not found any text that was difficult to read (alltho I have only played the game for a couple of hours).

Cut scene videos only show a black screen. You can hear the audio, but you can not view anything.
Other than not being able to view the cut scene videos (which, so far, have not prevented me from playing the game, the game plays well on my Chromebook.

Worked perfectly
Everything worked out of the box with no need to tweak any settings

Intro cut-scene requires GE-Proton, everything else seems to work fine