Yalopolooza! You smashed an opponent up.
You drove around a loop the loop.
You drove around a corkscrew.
You smashed into an opponent in mid-air.
You gave an opponent a piggy back.
You drifted more than 200m.
You jumped more than 100m.
You completed Campaign mode!
You completed Offensive mode! That's pretty hardcore.
You smashed into an opponent from another track.
You jumped more than 300m.
You drifted more than 400m.
You came 1st in all tracks in a race.
You obtained a medal of the golden variety.