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