Didn't work out of the box for me, perhaps because my linux box is a bit old, old version of distro, I can't update it or it will break, maybe newer linux distros won't have any problem whatsoever.

I had to add the PROTON_USE_WINED3D=1 %command% launch option because it didnt' even launch without it. Without it all I had was an error message that said the following:

Failed to initialize graphics.Make sure you have DirectX 11 installed, have up to datedrivers for your graphics card and have not disabled3D acceleration in display settings.InitializeEngineGraphics failed

I also changed steamplay proton's version to "Experimental" just to make sure it was running on Proton. With that done' everything ran OK. It showed windowed at first, but ALT + Intro switched it into full screen, so it's all OK to play now.