It feels more like a guessing game than a true platformer. As for the visuals not being scary. They honestly could be creepy in the right setting so good job there. To really drive it home I would add distorted music when you die.
Yeah, I know, but the main goal wasn't to be scary or creepy honestly, because this was made in a rush so I was just like RANDOM CRAP GO! and that's how this game was created.