A very interesting idea. The viewport feels claustrophobic, primarily due to unused space all around it I think. The clean visuals of the dungeon itself help but don't entirely offset the issue.
Definitely some bugs here and there with the combat (Saw a skeleton attacking a wall for about 30 seconds straight), but it has potential. Some cleanup and maybe deal with all the unused space when exploring the dungeon and it could be a nice little demo :)