While not the most original submission, it has some very clever mechanics which compliment each other really well and put you into interesting situations. For example, I may not want to reroll, because I have a gun I like, but increasing amount of enemies forces me to, since the die also acts as a bomb, so I reroll and most of the enemies are gone, but I got low stats and now I want to reroll, but the charge is low, so I have to carefully charge up the die, before I can finally reroll again. It as very cool core gameplay loop, that keeps you engaged at all times and makes you constantly switch your gameplay style.
That said, it still can use a bit of polish and balancing. In the current state I found myself being underpowered too often, turning killings of the enemies into a chore. Also enemy deaths can be made more satisfying, add some of that juice.
What really made it for me, though, was the presentation. The pixel art is great: the colors are pretty and the little low-res sprites look cute. And the sound effects are very nostalgic. Well done.