I think you have an interesting concept on your hands.
I wasn't entirely sure how the dice worked at first. I thought I have to shoot it when it reaches the icon I want to get, but it seems the outcome is just random.
I think it being completely random creates interesting pressure points, you have to keep rerolling and play the level longer and survive longer. On the other hand it can get quite frustrating if RNG is particularly bad for you.
Overall solid job!