I think it was interesting. I felt myself rather engaged with running through the mines, blasting through rocks and such, although it became less so when the floors got as massive as they did. Ended up using items to freeze time for the rest of the game and blast my way through the last couple of floors.
I think there's a decently interesting idea here, but for me, the experience didn't feel grounded. There are a lot of loose mechanics that don't feel like they were made for each other, if that makes sense.
Apart from that, I find the sense of humor rather charming. The music is incredibly curious. Decided to check you two out on Spotify, and was not disappointed.
Good luck with the rest of the jam, and with your next project as well.