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