i really like the art style as well like others have said! The thumbnail image is really cute and is the reason I clicked!
I'm curious if the punishing restart was part of your intention, to capture the feeling of sleep paralysis, not being able to wake up, yet trying so hard to over and over. I had a slightly frustrating experience when I got really far in the level, but missed a jump and had to start over again ... but it sparked some thoughts, so good job!