

Everything worked without any tinkering
Great Game runs Perfectly
The Game works perfectly during the entire playthrough including cutscenes.
Runs perfectly
Cutscenes, other than the initial intro, don't play.

Videos were broken with newer versions of Proton. 6.3-8 works fine.
Video clips are crucial for enjoyment of the game, so downgrading Proton is a must.
Cutscenes dont work. Black screen with Proton GE, Skippable with Proton Experimental
Game doesn't download the correct files but only 100mb of data that doesn't allow it to exectue
Seems the installation is broken on steam deck. The game is around 4gb of space and the deck installation is just roughly 100mb.

Tried with Proton 7.0-1, Proton Experimental, and Proton GE 7-14
Tried with Proton 7.0-1, Proton Experimental, and Proton GE 7-14

The game does not launch in it's default state, I didn't try tinkering with it.
Game is playbale with standard proton but cutscenes are not viewable (Cutscenes just some moving yellow-pinkish stuff. Seen this also in some other games.)

Only with using Proton-6.20-GE-1 (i just tested with that version and Proton Experimental)
Proton-6.20-GE-1
With Proton Experimental the videoclips dont show. With Proton-6.20-GE-1 everything works 100% perfectly fine.
Proton-5.21-GE-1 GloriousEggroll
After installing the GloriousEggroll Proton version to Steam and selecting it as the compatibility tool for the game, everything worked perfectly. I played through the whole game without any problems.
With the stock Proton 5.13-5 from Steam the game seems to work except for the cutscenes. As the game is very story driven, this would make you miss a lot of the game. Because of this using GloriousEggroll Proton is pretty much mandatory.

5.9-GE-8-ST GloriousEggroll
Tried a few official Proton versions - game works fine with those but cutscenes don't play. Using Proton-GE cutscenes work and game plays flawlessly