Here is the full list of all 20 Donut County achievements. It takes around 2-3 hours to unlock all of the achievements on Windows.
Break into the vault at Raccoon HQ.
Make Chef's secret soup recipe.
Find Trash King's secret getaway vehicle.
Destroy Trash King's monument.
Lose the boss fight.
Fly through the donut hole.
Break 3 dozen eggs.
Finish Gecko Park without collecting the radio.
Quack 100 times.
Set Pepper's trailer on fire.
Complete the Trashopedia.
Bring everyone back from underground.
Win the boss fight.
Complete the boss fight without taking damage.
Destroy Trash King's monitor.
Hack into the mainframe.
Destroy Raccoon Lagoon.
Destroy the donut shop.
Stock up on gamer fuel.
Release the hot air balloon.