I had no problem...
...but I've played only half an hour
The game works perfectly out of the box on Linux with no notable issues, but beware that does not perform very well on any platform.
This is simply not a well optimized game. Performance on Windows is quite bad as well. It's game-related problem, not a Linux issue.
Like I said, this is a game that will struggle to maintain even a solid 60fps on all platforms, not just Linux. This is made more annoying by the fact that there are not a lot of graphical options. There's also the additional factor that this game has no support for Ultrawide screens whatsoever, which is disappointing.
This game should not be rated silver here. This is modern Unity game, and pretty much all modern Unity games run out of the box on vanilla Proton. I seriously question the reliability of the negative reports below.
My Steam Deck runs with CryoUtilities recommended settings but I suppose the game runs as well without it.
Locked FPS to 30
The intro video was stuttering a little bit
I played the first two missions so far. Graphic settings were all maxed. It ran flawlessly.
