Art style was great and going 3D in a game jam is always a bold strategy, so kudos for pulling something together in the time constraint! The control scheme felt very unnatural to me and movement seemed to become awkward at places where the elevation changes; I'm wondering if voxels may have been the way to go?
The game felt surprisingly chilled given that it's pretty much a mob-survival game, but the music and art worked well together. I read in another comment that you were solo, so as a fellow solo dev, I commend your efforts here and congratulations on the submission!