Tooo easy. I'm running Linux Mint. Here's the steps I did. Once you have Linux installed this should take you less hen 5 min with decent internet.
1: install steam
2: install AH3 from steam library
3: right click o ah3 game under steam library and select:
Force compatibility proton 9.xx
That's it, detected sound, controllers, monitor etc. Framerate was maxed at whatever the default settings were with a 1080.
The VR looks a little more tricky as the link cable won't work with Linux and I'll have to use 5Ghz wifi to get the quest 2 to work. Let me know if anybody needs this and I'll try to get to it sooner if needed.