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