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