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