Here is the full list of all 38 Hero of the Kingdom achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Find 60 lost crates and barrels.
Find 300 mushrooms.
Find 140 eggs.
Gather 40 sacks of night flowers.
Make 25 sun solutions.
Own 5,000 gold coins.
Catch 160 fish.
Pick 45 herbs.
Gather 15 barrels of algae.
Hunt down 65 wild animals.
Rest 50 times in a camp.
Destroy the Dark Lord.
Find 12 treasures.
Fight 12 battles.
Find 12 pearls.
Catch 80 fish.
Have 350 fame.
Heal five people.
Help two ghosts.
Find father.
Own 500 gold coins.
Build or repair 10 structures.
Find 30 lost crates and barrels.
Learn an expert skill.
Find 25 crayfish.
Find 150 mushrooms.
Hunt down 25 wild animals.
Become a soldier.
Learn an advanced skill.
Have 100 fame.
Get a boat.
Finish the water mill.
Learn three skills.
Get a weapon.
Make a barter.
Leave the home farm.
Saw 10 pieces of wood.
Get working tools.