First Level Completed With 3 Stars!
First lava burn.
First time drowned.
First time eroded by acid.
First death.
Finish a level after dying.
Touch with both wheels on the roof.
Perform 3 front flips.
Perform 3 back flips.
Finish level with full nitro bar.
First explosion!
Pick up a nitro while burning nitro.
Crashed while riding at full speed.
Win twenty Multiplayer Challenges.
Finish any level with three pizzas inside Pizza Gut Motorcycle.
Grab 20 Stars.
Grab 40 Stars.
Grab 90 Stars.
Grab 60 Stars.
Unlock the second world.
Unlock the third world.
Do some serious damage.
Remembering iStunt 2.
Burnout for 5 seconds.
Click "retry" 20 times.
Unlock Pinky Bike.
Unlock Pizza Gut Bike.
Unlock Blink Bike.
Unlock Breezer Bike.
Unlock Bolt Bike.
Unlock Ninja Bike.
Unlock Dynamite Bike.
Unlock Chopper.
Unlock Legacy.
Unlock Extreme.
Unlock SuperDuke R - KTM Bike.