Couple of random things. First, I really liked the game. The whole theme, story, and gameplay kept me playing to the end (and that twist!). I did notice a few bugs though.
When moving the mouse over a certain direction (I first noticed this in the throne room), the mouse becomes a bit jittery and moves faster than it does facing any other direction. I believe this is when I was at the edge of the room (or in one of the side rooms) and looking toward the center. My team and I had this issue in one of our games, from what I remember it was something with the textures being too detailed, so it kind of became laggy/jittery when facing those textures. I'm not sure what you can do with bought assets, but if it's possible to dumb them down in some way to prevent that, that would be great. I'm sure you'd have to experiment around with some stuff.
The narrator also told me that I couldn't jump the gap in the stairs and that I'd need to find another way up. I'm not entirely sure what I did but I was able to double/triple jump and make it up there. I did find the proper solution on a second playthrough though.
Some of the subtitles were slightly out of view of my screen when I wasn't in full screen, and I had a little bit of trouble understanding the narrator at times, but I thought her voice overall was perfect.
I did really enjoy the game though and would love to see what comes of it!