Very impressive for jam game! The pixel art, colors, lightning, animations are all excellent. Also the world is interesting and HUGE! I am not sure how far I made it, maybe 1/3 of the world? There was this vertical shaft with small thingies crawling up and down on both sides - didn't make it beyond that. I am playing with keyboard - I am not a good platform player, this hurdle was too big for me :-D
But I enjoyed every moment up until that point. Really good game!