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.
Destroy the Dark Lord.
Find 60 lost crates and barrels.
Find 300 mushrooms.
Fight 12 battles.
Hunt down 65 wild animals.
Pick 45 herbs.
Catch 160 fish.
Make 25 sun solutions.
Have 350 fame.
Gather 40 sacks of night flowers.
Rest 50 times in a camp.
Find 12 treasures.
Own 5,000 gold coins.
Help two ghosts.
Find 140 eggs.
Find 12 pearls.
Heal five people.
Hunt down 25 wild animals.
Find father.
Catch 80 fish.
Gather 15 barrels of algae.
Find 25 crayfish.
Learn an expert skill.
Own 500 gold coins.
Build or repair 10 structures.
Find 30 lost crates and barrels.
Find 150 mushrooms.
Learn an advanced skill.
Become a soldier.
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.