It ran via proton during beta but VAC did not allow playing on Valve servers. Now there is also a proper Linux version. Though I am not getting any sound for some reason. I'm sure there will be a fix soon.
Now I only hope for the Wayland "allow tearing" feature for disabling of vsync to actually be able to properly play it on Linux. It is merged everywhere (wayland, xwayland, mesa, etc.) but I know Gnome will be the last to implement it, maybe in a couple years time. They can't even merge the variable refresh rate patches which have been waiting for years. :(
Interesting, I find it quite playable without on 160Hz! I use gamescope to make it slightly better feeling. I'm also on Sway/wlroots - fairly minimal, but still sync-happy.
Have you tried gamescope out, perhaps the '--immediate-flips' argument? That suggests it may lead to/allow tearing - or does it depend on what you're waiting for?
Check audio settings. There are selection for audio output (Settings Menu -> Audio -> Audio Device). I didn't have any sound but selecting anything else than "Default Device" worked.
Same here, actually - no sound. I don't even see the application in pavucontrol; even though the game sees my devices, it doesn't claim them?