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...
Swipe upward when you jump for a jump boost.
'My Robots' section on the main menu has all the info on enemy robot you may need.
Watch out when using Tuna and his power-ups as they can be the opposite of what you need at that moment.