First impressions.
LOUD !! if you are after a scare due to being suddenly deafened, it worked.
the difference in volume level between the menu music and the game is far too big.
My master level is down to 15% and it is still very loud.
Try and set your internal levels to 50% and let the user system have the headroom.
Does not list the native display sizes for 1360/1366x768 monitors.
Changing the display size does not seem to work. The screen flickers but does not change.
Settings are not saved.
Possibly a bug with intel GFX but cannot access the menu once the game has started, so have to kill the task to quit.
The menu does apear for less than a second when the escape key is pressed.
Upon entering the first corridor the dialouge is out of sync with the action.
The voice says "I hope the lever still works" before you have got far enough to see a lever. She shoulld say that when you are at the lever.
I suggest you have the voice actor play the game, or sit-in on a play through, as the dialouge sounds like someone reading sentences from a list, not reacting to the environment.
The voice seems disconnected and like someone reading a book, or a narrator speaking over the top.
Perhaps you can use the environment reverb on the vocal at the same time. This would help put the voice in the picture.
Why is there no crouch ?
The player is supposed to be a stealth expert but cannot crouch. This seems counter intuative, even if crouching does not help with defence or hiding.
The motion blur goes well with the look of the game, but can feel like the player is under the effects of drugs. Personally I would turn it down a little, or only use it during times of anxiety so it seems like maybe you are over flowing with adrenalin.
Sorry for being so critical but being involved with game development it is difficult to switch off.
I am only just starting the game so I don't have any gameplay feedback yet.