So after playing this game for a few hours. I've decided that this game has a whole lot of potential, especially with the rhythm dungeon crawler aspect. Unfortunately, the limited controls, which makes me believe this game was always intended for a dance mat, takes a slight learning curve. I would have liked a different button for attacks instead of the simply move towards the enemy to automatically attack, and an easier method to access items. It's a fun game with loads of potential that's not fully realized in the basic controls.
UPDATE: After remapping some of the controls, I've found it much more playable with my Xbox controller.