I found it oddly simple but very self explanatory once you get past the second 'checkpoint'. I think for a small team in a game jam it's a fine example of a proof of concept. Artistically as you progress it conveys a clear message and further in makes you feel what the message is trying to communicate.
I did, however, find the path choice a little odd. I.e. perhaps one is more about the 'darkness' than the other but then it loses consistency. I would have liked to see a little more difference in choice there. I also found the tiled background sprite to really need the floor detail reworked. It's such a major component to the game and yet it has such an obvious graphical issue.
Overall a nice little game jam entry and your team should be proud to have submitted it.