Thanks for your feedback, actually the initial idea is really to make micro levels that last a few seconds I thought it was related to the small resolution. For the last level I didn't want a boss and I was looking for something a little different that wouldn't take me too much time to develop and there you go... thanks again. For the challenge I'm still torn because I also like more difficult platform games but it's important that on a jam everyone can play it a little... what I would like is to make additional more difficult levels but there I lacked time and space to do it serenely. Same thing for the end cinematic... as I didn't have much space left I chose to make an end screen.