Here is the full list of all 12 Summer Funland trophies - there are 8 bronze, 3 silver and 1 gold.
Use the map.
Catch the ball.
Finish climbing without falling.
Get 40 points in a row without missing.
Get 300 points.
Find all the mascots.
Finish all the attractions.
Enter time travel gate.
Use 3D glasses for the first time.
Get 3000 points.
Get 150 points.
Get 999 points.