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