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