I like art direction except for the wall textures which SpeedyBrain also picked up on. I fell through the floor on one occasion and the lifts could have moved a little faster for my liking, and the lack of sound was a bit disappointing, but there's only so much that can be done in 48 hours.
The concept was quite interesting (got some Until Dawn vibes) and I think it's just a case of not having enough time to fully finish it. I think it'd be really neat with a bit more time and polish!