In all the talk of graphical downgrades no one seems much preoccupied with 'why?'. Why build something and then proceed to tear it down, piece by piece, in the hope that ever more diminished expectations about the final product won't be severe enough to...
Keep an eye on monsters that come across the bottom of the screen and doge their fire-breathing attack.
Bosses, as usual have patterns, learn them and attack.
Kick the explosive basketballs quickly and get out of the way.