Nice use of environmental storytelling. I liked the scribbling animations of blue stuff going everywhere, and the ending(?) where the walkway breaks and you fall back near the beginning was funny.
Most of the content seems to be at the beginning and end, with a lot of loops in between with nothing but walking. I assume you didn't have enough time to make all the content you had scoped for, but I think it would have been better to just delete all the empty loops and make a hallway straight to the end once you get past the interesting stuff.