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