I feel like there's a lot of potential here, so I'll share my thoughts. I think just a few tweaks could go a long way:
-Consider tightening up the movement, it feels a bit sluggish. Also I got stuck on the stairs a few times
-That floating gun feels kind of weird. I know it's a simulation, but something about it just floating there and also how high it is seems a bit off (actually maybe the player's head is just too low in general)?
-I found effectively using the newspaper to be too hard: between getting the victim to the place you prepare (you just have to wait?) and the incredible fountains of blood (which I liked, don't get me wrong) it feels like comically impossible, but not in an intentional way.
-When the victim continues to bleed after the evidence has been collected, I feel like I am cheated out of all those potential points!
-Sometimes the game will just end and I'm not sure why. (Maybe because I scared the victim away?)