It looks like you didn't had much time for this jam so it's hard to judge.
The art style is ok. IMO it just needs a better lighting (just changing the main and ambiant lights colors could be enough) and something to hide the unity's default skybox like a ceiling or a random skybox from the asset store.
The gameplay needs more work but it was a good idea. I rated other games with a similar premise and some of them were very good!
Also there is a problem in the web version. The screen is cropped. The healthbar is hidden and the doors are not entierely visible. The windows version does works, though.