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