I think the mouse controls could use some improvement.  I was able to get the knife on my first playthrough, but struggled on the second.  There's potential here: I wonder what Part II will hold?

The texture flickering on the walls really started to hurt my eyes after awhile. I was interested to see where you were going with this.

I can see where you were going with this concept. Good idea. I wish just wish you had more to do with remembering what happened which would have really hit the mark with the theme. Good Effort.