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