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