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