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