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