As others mentioned - good job on atmosphere. And I agree with others that movement is too slow. I understand the intention - to make it more scary, but it just takes so much time to explore anything with such big levels. And predictability, that every room has a kneeling person who might turn into a monster makes it even more monotonous.
Maybe if you make movement tiny bit faster (for thematic reasons, not too fast of course), but also reduce size of each floor that will make it way more enjoyable (in a good way!)