I like the game in general. But imho it is a bit imbalanced / too random:
* To beat the first level boss you would need a few re-runs, until you get a good gear drop. I would suggest to make dungeons bigger with more loot, monsters, maybe with some gear shop.
* At some point you are getting in a stalemate with the boss - no one can roll dice high enough to breach the defense.
* Low level monsters do not scale up as you advance through dungeons. So no challenge.
* I beat the game without facing any magic combat.
Also some small improvements from my side:
* Show the HP of monsters.
* A more pronounced inactive state for buttons (e.g. in a store when I can't buy an item).
* Hold arrow keys to move continuously (0.5 sec delay should be enough).
* Speed up the animation of displaying attack stats. Each row appears like after ~1 sec, so it takes about 4 seconds in total just to reveal it. Slows the battle significantly.
* In the loot popup show the item stats. Otherwise it is a bit of a gamble to swap gear (or maybe it was intentional).