

DXVK_ASYNC=1 gamemoderun %command%
Frame drops and slight stutters
Works well enough without ProtonGE and the native Linux build, but the latter does not show videos

Save data is deleted when the game is uninstalled. No Steam Cloud support.
Videos do not play with the default Proton version - GE required.
Works (almost) perfectly OOTB.
Could not get the game to fullscreen properly, could only play windowed.
In spite of the fullscreen issue, game runs perfectly natively OOTB.
Playable with the lower FPS and fullscreen bug, doesn't really require fast reflexes.
Switching between fullscreen/windowed can sometimes cause a texture to take over the entire screen, requiring a reset to become playable. It will remember your window mode on startup though, so if you switch it once and have to reset it should be fine.
Lower, inconsistent framerate, and very ccasional stutter.
I couldn't get this to open at all with Proton (7.0-1, 6.3-8, or current experimental) but the native version is playable.
Couldn't manage to get the game to run or switch into fullscreen. Native build has a screen transition bug early on that prevents all game progress, works fine on proton (proton-6.5-GE-2).