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.
Help two ghosts.
Own 5,000 gold coins.
Fight 12 battles.
Catch 160 fish.
Hunt down 65 wild animals.
Have 350 fame.
Find 60 lost crates and barrels.
Heal five people.
Find 12 treasures.
Find 300 mushrooms.
Find 140 eggs.
Find 12 pearls.
Find father.
Build or repair 10 structures.
Make 25 sun solutions.
Rest 50 times in a camp.
Learn an expert skill.
Pick 45 herbs.
Gather 40 sacks of night flowers.
Find 25 crayfish.
Become a soldier.
Gather 15 barrels of algae.
Catch 80 fish.
Hunt down 25 wild animals.
Find 30 lost crates and barrels.
Have 100 fame.
Get a boat.
Find 150 mushrooms.
Own 500 gold coins.
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.