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