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