Unlock every upgrade in the store.
Co-operative special attack for the first time.
Compete 10 times in each Arena mode.
Compete in the Arena for the first time.
Win all Cups in Expert mode.
Win 9 victory laps.
Win a Cup in Expert mode.
Win all Cups in Normal mode.
Win at the last second in Grand Prix Mode.
Take down at least 3 opponents in a single race.
Win with all racers.
Play as each racer at least once.
Use custom power ups for all the racers.
Win a Cup in Normal mode.
Win all Cups in easy mode.
Put in the miles on the jetski.
Break 5 objects in a single race using boost.
Activate the Slime in all the locations.
Find a shortcut.
Modify your kart for the first time.
Win a Cup in easy mode.
Win a victory lap.
Beat your record for first time.
Win your first race.
Use a custom power up for the first time.
Use boost for the first time.
Activate the Slime valve for the first time.
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