Perform each trick (except Balance and Slide) 10 times in completed missions.
Spend 1 hour in the air in completed missions.
Collect 100 stars in a single Action Chain.
Increase score multiplier to 20 or more for both players in Split Screen simultaneously (you don't have to score points).
Ride 25 km without falling (in completed missions).
???
1 Trophies Unlocked
0 Trophies Unlocked
18 Trophies Unlocked