Wow this was great.
It's hard to explain but it just feels great, the momentum, gravity, speed, ... is just balanced very well so it feels super satisfying to play. And it looks good too.
Was very hard but I managed to beat it in the end :)
I agree with the previous comment that there's a few small issues with the controls to iron out if you kept working on this, but for 48 jours that's damned impressive.