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