I really like this game.
The story really touched me, with the message of not giving up and still trying. I love the atmosphere; the character design, black-and-white aesthetic, the music, etc. I also really like how the more the protagonist starts giving up, the deeper he falls, but by the end he's platforming up. Really cool symbolism!
..also, btw, wacky stuff happen when you spam jump. One time I ended skyrocketing into the sky, but most of the time it ended giving infinite mini-double jumps.