Very nice game! I really enjoyed playing it. Only thing I'm hoping you could fix is the difficulty. Enemies walk way too fast and players field of view is too small. You die almost every time you see an enemy. Unless you have some quick reflexes or get lucky and an enemy stops to rewind itself.
I managed to get to turn the key in one room but I did not know what to do next. Do I have to run back to the door without dying? Maybe you could stop all the monsters once key has been turned to allow player safely return to the main room. :)
Graphics were awesome and I liked music too.