

As you point out, intelligence is fuzzy and dependent on many factors. Which is why a straight line hard cut-off above and below the mean of a distribution seems pretty arbitrary to me, even if it is based upon a particularly useful way of delineating variance from a mean.
It’s not Linux native according to the icons in Steam, so try one of the Proton compatibility layers.
Proton Hotfix wouldn’t run it for me but Proton 9.0 got me into the game’s prologue and difficulty select (which requires walking around). Haven’t played any further than that though, so can’t tell if there are to be any problems with other levels.
Was able to modify sound, graphics and mouse settings with no trouble too.
Edit: Made it through to the first intermission screen with no problems. Well, at least not software related. Skill issues are another matter.