It's a nice tech demo. I did have trouble a couple times with saving in a given room: if there's an event in there or something, it'll just lock saving in that room entirely it seems. Perhaps you can save in that room if you exit and reenter after clearing the event, I didn't test for that. Along the same lines, I'd prefer as a player to not be put in these positions of wanting to lose a given fight once but having an unskippable cutscene right before said fight with no chance to save between the cutscene and the fight. The inn location was a notable example of that, where you can only realistically have a save in the screen prior and have to watch both the imps running around cutscene and also the struggle tutorial over again.
I also second what another comment here said: the green slime fight was trivial to constantly get up from, 25 stamina with the current stamina regeneration was too low. I could just continuously spam 'get up' after purposefully seeing how many times I could afford to get up after a knockdown, I think I was able to do so 5 times at least? I gave up trying after that.
Otherwise I love the new engine and the possibilities it introduces! <3 Looking forward to more for sure.