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