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