This was pretty damn good. The graphics especially, the mood, and even the map you wandered were excellent. Even the theme helped make this even more mysterious.
The gameplay however fell a bit short. Not only was there only 1 type of shadowpeople, and as thus 1 type of non-threat, they also apparated through floors, which kind of broke the horror mood of it for me as I was laughing for them to come above the ground so I could vanquish them. Additionally, the road was long, so I kind of expected some kind of variation.
Other than that I enjoyed it, definitely one of the better done spoopier submissions. Even the title is spoopy.