Pros and cons are down below) Check out the gameplay here (the game is the 2d there):
Advantages:
1. I loved the subtle scares like shadow under the door or teleporting wooden mannequin!
2. Sounds were so awesome! Nothing really was happening but sound design still scared the bajonkes out of me!
Disadvantages:
1. The game was a bit empty. There were not much to explore or to interact with. Maybe it would be cooler to add different floors (and maybe different endings depending on which floor the player chooses).
2. The ending was anticlimactic. The player should be always encouraged to go through the experience. If they want to stray and investigate - add a small spook which many, who would not investigate, would have missed. If the player goes till the end - add a nice spook or a scary monster to make it worth their time. That's a nice motto for a good horror game developer. So, your mannequin thingy was awesome but the enging requires a bit of work.
Overall:
The game was nice but there is so much room for improvement! So, I'll rate the game 4/5. I wish to see more projects from you!
Hope my feedback was useful!