to earn the 21 achievement, when you finish the game, hack all computers without kill anyone, when the main brain turn vulnerable, toggle of the ''electric lights'' and keep turning it on\off repeatedly to make a higher combo.
if you wat to hold the today best score (in one jump) grab 3 groupies and the propeller hat.
with the golden cart perform a exellent or perfect jump and try to perform all tricks you can while in air (try too reach the space bus) then do the trick of the hang glider and keep doing it when this trick while. after a hang glider over you fall try to trick or Endo whellie that will air 2 ground. On the floor do the trick hanstand whellie. in order to try to multiply the maximum of its points
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