Here is the full list of all 21 Donut County trophies - there are 7 bronze, 5 silver, 8 gold and 1 platinum.
Unlock all trophies.
Lose the boss fight.
Break into the vault at Raccoon HQ.
Find Trash King's secret getaway vehicle.
Fly through the donut hole.
Make Chef's secret soup recipe.
Destroy Trash King's monitor.
Set Pepper's trailer on fire.
Complete the boss fight without taking damage.
Complete the Trashopedia.
Bring everyone back from underground.
Win the boss fight.
Destroy Trash King's monument.
Hack into the mainframe.
Destroy Raccoon Lagoon.
Destroy the donut shop.
Break 3 dozen eggs.
Stock up on gamer fuel.
Finish Gecko Park without collecting the radio.
Release the hot air balloon.
Quack 100 times.