I liked it! The graphics and sound effects create a great atmosphere. I especially like the UV light, and the suspense and fear it creates - just following all those marks, and knowing something could jump out at any moment was thrilling (the cat was fun).
I also enjoyed the story and appreciated all the work you put into the characters and the backstory. I'd read the game description before playing so some of the surprise was gone when I found those bodies.
The puzzles were easy but enjoyable. Overall, a good game with an interesting story. Well done!