As other mentioned, it's hard to understand how to play indeed! I felt like you had to select the dices depending on your enemy to maximise the 'good' output chance, so I tried just that!
In the end, the game is original and assets are great. I see where you were going, and that's very interesting. It lacks a few things in my opinion: sounds (to make it juicy), a tutorial/explanation, and a bit more of animations, to be...juicy again!