I loved the simplicity and chaos of this game! The menu screen looked great and the whole game was very clean. I didn't notice any bugs (except maybe a couple enemies leaking through walls, but that just added to the chaos!). I liked your usage of the dice to generate the enemies, it was a nice incorporation of the theme of the jam.
Minor suggestions: Some more intense music would have suited it nicely. Although I see that you made your own music, so props totally to you for doing that. And second, having a kill counter of sorts would give the player a bit more drive to play again. Gotta beat that high score!
Overall, I really enjoyed playing this game. I can totally see this game being expanded into a really cool full-scale game. The enemies rapid multiplication after being killed would add a huge new strategic element to the game, like the player would have to be incredibly cautious with who they killed as it would only make whatever the goal ended up being exponentially harder! Nice game!