Not bad, but I didn't understand the game, and neither did the purpose of it.

Definitely an awesome implementation of a maze/avoidance horror mechanic in such a short amount of time! It took me a while to realise that the red circle of death was the true enemy, but once that occurred the game took the form of something like running the gauntlet through the maze before the light caught up to me. Incidentally I thought it was neat that you could resize the window to make it as high- or low-fidelity as you like. Agree on the comments that the shaders look cool. 

I liked this game, It was a very simple idea that was very well executed for being made in two days. The atmosphere is great! I liked the look of the pixelation shader, it worked well!  There are no sounds in the game, I think even looping an ambiance sound in the background would have added a lot. I found the keys can be hard to pick up at times, you have to find the right angle. I expected something to happen once the door was unlocked but the game just restarted. Also, your itch page is missing the control to toggle the flashlight. Overall, I think with some polishing and expansion this will turn out to be a really neat game. Good job!