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