A few things you NEED TO KNOW: Some people will have a problem with Unity crashing instantly, I fixed this by installing 'openxr' from my package manager (sudo pacman -S openxr). Steam supposedly "installs" this for you when you download SteamVR, but it still fixed it in my case. It seems like a LOT of Unity games have this OpenXR issue, so see if it works for you too. Secondly this DOES NOT work with the '-openvr' launch option. Please remove it if you have it. The only way I got this game running is by opening SteamVR and selecting the game from there, but you can also just open it from your PC after SteamVR is up and running.

I hope this helps some play this game, because it's fun as hell.