because of my old GPU I had to use DX9 fallback to make this game running, it maybe not the case for newer GPUs with better DX11 support. To see ingame text corefonts have to be added to proton prefix (tho it's mirror issue as there's almost no text, can be skipped). Game itself performed very bad 200% worse than same on Windows 7, issues with sound (I suspect it is DirectX issue, could be related to old GPU I tested it on). Overall not very usable, I ended up playing it from Windows.