Great game! Art was beautiful, take on the theme was original, gameplay was entertaining.
My main quibble is that there is no disincentive for firing without caring what you are shooting. As a result, I unfortunately did not pay attention whatsoever to the dice mechanic. It was as if the enemies were just larger damage sponges. This was doubly so with the boss.
Here are my two recommendations:
First, make it worth the players while to pay attention to the dice, be that through a combo system that rewards shooting only the appropriate dice while disposing of the others or by making each shot that hits an enemy but is not the proper dice hurt you instead. Or maybe make the dodge available only when a combo is maintained!
Second, put the dice at the cursor instead of the player character. Whenever I play these types of games, my focus is on the cursor while the character is in my periphery.
Great game otherwise! Loved the art, music, and the take on the theme. Just needs a bit more to fully integrate the theme,