Since I could run https://akratichuman.itch.io/haroldmancer in Linux via Steam's Proton Experimental, I decided to try with other games.
And Ruphand works! Although not with basic https://www.winehq.org/ ...
Now that I'm reading the intro again, I'm noticing a theme with Oakenhaven! "Well, they rarely do seem like hero material until after they get some heroics done.", like how Oakenhaven's heroes have to work past their flaws to become great heroes! Or maybe not, if somehow a party actually manages to win without doing that.
Huh. She starts with a Simple Shield. I dunno if that's new or not.