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.
Fight 12 battles.
Find 300 mushrooms.
Find 140 eggs.
Catch 160 fish.
Have 350 fame.
Find 12 treasures.
Own 5,000 gold coins.
Find 12 pearls.
Help two ghosts.
Heal five people.
Hunt down 65 wild animals.
Pick 45 herbs.
Make 25 sun solutions.
Rest 50 times in a camp.
Learn an expert skill.
Gather 40 sacks of night flowers.
Find father.
Build or repair 10 structures.
Find 25 crayfish.
Gather 15 barrels of algae.
Catch 80 fish.
Find 30 lost crates and barrels.
Become a soldier.
Hunt down 25 wild animals.
Get a boat.
Own 500 gold coins.
Have 100 fame.
Find 150 mushrooms.
Learn an advanced skill.
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.