Well, that was kinda random and I still don't see what was stopping me just opening any one of the many windows and jumping outside.
But still, I'll give a full list of things I like and things I didn't.
Starting with the things I didn't because other forum users will thing I'm flaming if I do that last xD:
* I didn't like the fact it was all in black and white
* I didn't like the changing light levels
* I didn't like the randomness of the whole thing - it didn't seem to make much sense, yet there were other areas like having to get the key out the sink that made perfect sense.
* I nearly closed the game straight away when I realised how horrible the mouse movement felt.
* I didn't like where the key to the second room was hidden, I felt that was a bit cheap, especially as bloom isn't even a real effect - and the key would be a different colour to the light coming through the window.
* I didn't like the fact that the girl somehow managed to get a knife from somewhere. - I'd have made it so she finds it in that room, but if you take it first, she can't get it and there is a different ending.
And the things I did like:
* I liked the random heartbeat over by the sink area (but felt it would have worked better for tension somewhere else)
* I liked how nicely presented it all was, with things you can use highlighting and all the icons for the keys glowing
* I liked the fact I got stuck quite often, but then managed to figure out what to do next without too much angst.
* I liked how creepy the random headless&heartless girl was, the way she creeps up and stands right behind you.
All in all, I preferred the last game you made, with the different coloured mazes made of smooth shiny rectangles. But still, if this is made to be art and is at least playable, you shouldn't care too much about the ups and downs.