After a couple tries, I finished the demo! I think it's pretty well balanced, for a demo. Several times, I found myself saying "Ugh, this is impossible!" then, shortly after, "Oh. That was actually pretty simple," which I think is a good sign.
Definitely a few glitches. In another comment, I described one I encountered twice last night where everything suddenly stopped working.
I was overthinking quite a bit about which weapons and items to carry with me. It turned out not to matter much, which was both a relief and a bit disappointing. Hopefully, the developer will eventually have the resources to make weapon choice a bit more meaningful. Maybe they could save a bit of effort by mixing carefully designed floors with procedurally generated areas like the ones in Dungeon Wayfarer?
Overall, I thought it was fun.