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