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