I've really enjoyed this game so far. I think the potential is there for a really great game. The mechanics are simple to understand, but there's a fair bit of strategy to it all. The art, music, enemy variety, and dice variety are all lacking, but I think you've done the hardest and most important part already: making your game fun. I hope you take this idea and run with it. I'd love to see a full-fledged Die in the Dungeon game.