I really like it! The gameplay is very fun and original for this sort of game, and the art looks great.
Some ideas for future development:
- Defensive stance and passive regeneration are a bit too good. Lower numbers on the passive regen and limited access to strong attacks while on defense would help balance them out.
- The encounter rate could decrease every time an enemy is slain in a given area. This will help reduce both player fatigue when lost and over-grinding.
- A map feature would be great. Alternatively you can place a second camera in the scene with a top-down perspective to act as a mini-map.
- If you want to try randomizing the dungeon at all, I've made a very similar Unity project in the past that had the floor, features, monsters and treasure dynamically generated. I can share the C# code if you'd like.