Collect twenty white balloons to get twenty more seconds in Free Flight mode.
Go through all sixty gold rings to get more time in Free Flight mode.
Alternate ending credits
Successfully complete all missions with a perfect score.
Castle at Private Island
Collect all 75 Sight Rings in Free Flight mode.
Diamond class missions and vehicles
Get a "3 Star" rank on all missions in every class.
Evening Free Flight mode
Collect 30 I Rings.
Free Flight vehicles
Complete the indicated task to unlock the corresponding vehicle.
Cycle Glider: Complete all Gold Class missions.
Super Rocket Belt: Complete all Platinum class missions.
Turbo Jet: Complete all Silver Class missions.
Free Roam collectibles
Reach the indicated class to unlock the corresponding collectible in Free Roam mode.
Balloons: Silver Class.
Extras: Gold Class.
Mario reference
During the "Three Minute Glide" mission, the sound of Mario dying can be heard when you fly through the small village.
Meca Hawk Diorama
Get a "3 Star" rank on all Diamond class missions.