Blown away by this one. Looks great, sounds great, plays great, and is packed with features and extras to discover without wearing out its welcome. I found the UI and flow really intuitive and pretty much everything about being a dungeon frog satisfying. You absolutely nailed this.
Still, I'd like to offer something more than "loved it", so here go a few things I took note of:
1. When picking up the battle axe/hammer, my weapon inventory was full, but it disappeared and I didn't get to use it. Seemed unintentional, given other items wouldn't let you pick them up if you had no space.
2. When multiple items were on screen, it wasn't clear what you'd pick up. A non-issue in most cases, but if you've only got space to pick up one more thing, being able to highlight something specific might be nice.
3. I chalk this one up to personal preference but figure it's worth mentioning: In a room with two enemies, after killing one, the other moves to the centre and the relevant UI changes. It only takes a second to recalibrate so it's pretty much inconsequential, but it's a slightly jarring inconsistency.