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