Complete your first race
Complete your first game of tag
Complete your first game of "Bad Taxi"
Complete your first game of "Coin Collector"
Complete your first game of "Diamond Hunt"
Collect all stars in the "Downtown" map
Collect all stars in the "Forest" map
Collect all stars in the "Castle" map
Collect all stars in the "Mountain" map
Collect all stars in the "Space" map
Unlock the secret car on the "Downtown" map
Unlock the secret car on the "Forest" map
Unlock the secret car on the "Castle" map
Unlock the secret car on the "Mountain" map
Unlock the secret car on the "Space" map