Works out of the box. If you happen to experience issues with input, restart the game
Seemingly in random occasions the game would boot without recognizing my input devices (controller, keyboard, mouse). I had to force-quit and restart the game (sometimes multiple times), but once working the game runs flawless. I'm not sure this is an issue with Proton or my machine or the game itself (I found the game to be quite buggy).
Game works out of the box perfectly. No sound issues and the unity mouse floating/jumping problem has been fixed.
Works perfectly out of the box, but experienced some rare audio crackling. A solution for that is either to set launch option "PULSE_LATENCY_MSEC=60 %command%", or change PulseAudio settings to default sample rate 48000.
Game works out of the box with like native performance. Note that it has the same issues as on Windows with controller detection and wrong screen prompts for button presses.
Works well, but requires Steam Launch option "PROTON_NO_D3D11=1 %command%"