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