I don't know exactly what your question is - in Any%, you're not allowed to skip anything using the level menu, as that is the domain of New Game+. Basically, you can't just hop back to the menu to skip any long segments in levels, because you must complete each level in its entirety. In NG+, you can use the level menu (on which every level is present because you've already beaten the game before) to skip slow parts of some levels, and the forced game close after hacker.