+1 I would buy this game a lot if you could make it buyable here or gog.com and make a linux build for it. I tried with wine/proton and even with C++ Redist 2022 it is not playable (only intro screen working)
Weird, it worked very well for me!
And I doubt there's any actual DRM in it, you could probably just run it directly and it'd be fine (but you'd lose proton, as proton is intended to only be run from steam and has a lot of very particular requirements that you're basically not going to be able to handle by itself)