Although you used pre-existing art, the platforming controls is so well done. The movement is really well refined and it feels great just to move around the level. The design of the levels were also done really well too, although my computer played it at a bit of a weird resolution the levels were fun and not boring at all. This was a really cool concept as well, though I do admit I mistook the knight's spinning animation for something like a helicopter blade which gave me the impression that I could fly with the knight haha.
The only thing I would suggest is adding some checkpoints or a few more hitpoints, as I got a little bit frustrated when I'd get hit and have to repeat the whole section all over again.
This is a really well put together game, I wish you luck for the rest of the jam!