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