Visually, absolutely amazing. Especially the scene in the end, working in concert with the music - top grade stuff!
The platforming itself was decently done, but lacked a bit of polish. Coyote time was already mentioned, which would have been a great addition. Still, everything worked well and I didn't feel like I had to fight the controls. There's just some room for improvement here, still.
All in all though, great job! Very good length for a jam game!