you can't hold a direction and jump at the same time, have to press jump then steer yourself in the air which feels awful. It means you can't move and jump from movement, you have to stop moving to jump, that's a no-no. if that's not bad enough, you have to wait till you stop bouncing after you land to jump again which sucks.
the rocks that bounce around spawn as soon as you start the next level so you're guaranteed to have some eggs get destroyed before you can get to them.
yeah idk about this, needs a lot of work. best of luck improving

fun gaeming. >:)