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