Cool platformer! The design of Blink, the spirits, and all of the cutscenes are really endearing and clearly have passion put into them, and the level design for the platforming was pretty good for a week of game design. The main issue is the speed of the player, as you move too fast and cannot position properly as the levels get harder. If you keep the sprint feature, turn it into the speed we're at now, and then half the current movement speed (walking, jumping, falling), then the platforming will feel much better, and I can better appreciate the character animations.
I also don't see how this game fits into the "game over isn't the end" theme except for the story where you're reviving a spirit, and/or the platformer checkpoint system (which isn't explained in the story, so I'm treating it as a non-diegetic game mechanic).
Overall, I had a lot of fun playing this game, just wished the movement was more player-friendly. Nice job!