Nice mood
I like the mood established in the game, i think the grainy camera works well for the mystery and motif of the game. Sometimes its easy to force an effect like that in and have it feel like a gimmick. I found the gameplay pretty cool. The camera angles, for the most part felt well chosen. Some of them are questionable and actually make it more frusterating and unnecessarily difficult to get through some places but all in all i found the cameras well done.
I found the hit boxes on spikes and some of the enemies to feel a bit wonky. Dont know if its just the camera angle or what but there would be parts where i know i didnt touch a spike and yet id explode. Which brings me to my next gripe, that being that the deaths felt like they didnt get any attention. Having him have a falling sprite when he walks off a cliff and other small touches like that woulda helped make the game a bit more polished.
Nice work.