Very nice atmosphere even if the graphics are very simple + the overuse of post processing effects to make it look good. I can get some people aren't artist and don't want to risk to spend time on that, but some little things could have improved it a little bit such as - as en exemple - trails, particle effects for bullets when they hit something or for the player when he walks, making the enemy squares blinking when they got hit, etc.
I didn't get surprised by the ending cuz your package game is named "scary game" lol, even tho it was kinda interesting to this the story progressing that way.
I feel the effect at the end is a bit too much considering you still have to move to another room to end the level, which is harder since you can't see a lot on the screen.
It's overall a nice experience to go through, congrats on publishing it!