It was a challenge for sure. The floaty movement gave a little trouble shooting the dice at the enemies.
Regarding the theme, I feel like you just replaced any other projectile with a dice to make it fit the theme. There wasn't any luck or risk taking made in the game itself and the dice really just felt like you were just throwing any object at the enemies. If it were me, I would have probably made it to where each time you throw the dice, it will roll a different powerup for the dice that can be used for the next throw. It would add some variation and would fit the theme better I feel like.