Insane amount of content for a jam. The models and lighting are very well done, and movement with keyboard and mouse is satisfying even if simple. There was a fun part, when I died and after respawning, was sliding on my back for half the level :) a bit annoying that you have to walk all the (now empty) way again though.
The relation to the theme seems a bit far-fetched ;)
And unfortunately Unity (or the graphics in this particular game) require quite a high-end hardware, on a laptop I tried it didn't run fluently.
All in all very impressive work!