The biggest problem I'm seeing is it's really difficult to get past level 8 or so, but after that you become extremely overpowered. I haven't accepted a level up bonus since about the 16th floor, and here at floor 30 I'm still entirely unbeatable. I'd suggest nerfing the level up bonus, especially for late in the game. I also kind of wish your stats were more heavily influenced by your gear, because I could drop all my gear and still get by on pure stats. Don't get me wrong, it's otherwise a fantastic game, best I've seen in good while, but I think tweaking things a little bit could really enhance the gameplay.
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