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