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