Would you potentially consider releasing a linux build for this game at some point? If it's in unity, it ought to be possible. On the other hand, the odds of this working in Wine are pretty slim.
I honestly don't understand this statement, since wine 5.XY nearly all unity and unreal games work worry free. This one is no exception, I tried with wine 7.2, 7.5-staging and proton-GE 6.20 and 7.10, which may offer a better range of built-in tweaks for beginners. Remember that wine "is not an emulator" it's more a wrapper/container, you'll NEED the libraries on your *nix and so you'd need it to be multilib. I'd say to go on the Gentoo's Steam page to get an abi_x86_32 list of most of the mandatory libs. I use esync but not fsync anymore, atm the gain is negligible if not on a potato.
Actually the only problems I can run into are : games that use the legacy EAC, they'll either self-kill or won't let you play multiplayer. Unity games ran through steam as native linux/ports, multiplayer tend to go out-of-sync lately, installing the win. version is ok. Multi-channel audio can be wonky since I use pipewire, pulse was ok.