i would have given 4 full stars , not that because mine matters.
But the fact that i cannot jump when at the corner of a box is really annoying, because the box looks flat but not able to jump from that point makes it feel like an invincible sharp object is blocking me from jumping.
Everybody tries to speed run any side scrolling game..., and everyone expects it to be smooth.
Just leaving my opinion.
I got to level 6. its pretty cool too.
Good luck