The premise of the game intrigued me a lot, considering that I have played your other games I gave this one a shot and it did well for a while.
The game's structure is simple. The creepy vibe is definitely there. I liked the puzzle solving element to the game, but after that it was just a very long chase sequence. That would not hurt the overall quality, until I encountered a bug - got stuck right in the middle of the corridor. FYI, I did play the game off screen and had to deal with the same issue. Clearly it only happened to me, because I saw other people paying it too, so maybe it was my fault.
Still, I expected a bit more from the game. That does not discredit the overall quality thou. It was solid good.
Best of luck with the future developments. Cheers!