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