Visual style is gorgeous, and the platforming feels really nice, especially the way you can hug walls and climb up them. Audio matches the visual style perfectly, and the music on the title screen was cool, it's a shame you didn't get chance to add some level music too!
The level design could do with having some better conveyance - one blind drop leads to a new area, whereas another is instant death - but it's still fun to explore the limited area available.
Look forward to seeing where you take it next!