Oh wow, this was a really fun concept and well executed! Don't really have any major complaints gameplay-wise, maybe that since you can't influence the position of the dice that well, a few of the weapons feel underpowered compared to others.
Graphics-wise, maybe try to work on contrast a bit. Right now, everything is sort of at the same brightness level and it's hard to tell what is important and what is just flourish.
Anyway, this was a really enjoyable game, well done!