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