Here is the full list of all 57 Hero of the Kingdom III achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Achieve 140 fame.
Defeat Earthquaker.
Get the smithing skill to 100.
Make 80 weapons or shields.
Mine 50 pieces of silver ore.
Get the combat skill to 100.
Hunt down 150 wild animals.
Get the fishing skill to 100.
Get the mining skill to 100.
Have 5,000 gold coins.
Cook 8,000 food.
Make 600 various potions.
Pick 300 flowers.
Get the archery skill to 100.
Mine 50 pieces of iron ore.
Kill 300 monsters.
Get the lockpicking skill to 100.
Destroy all of the orc camps.
Get the cooking skill to 100.
Pick 60 locks.
Get the herbalism skill to 100.
Hunt down 20 foxes.
Have at least 1,000 strength.
Find 24 pearls.
Have 1,000 gold coins.
Visit the Azure Valley.
Find 400 eggs.
Catch a golden fish.
Gather 100 berries.
Find 120 lost crates and barrels.
Get the alchemy skill to 100.
Make 100 healing potions.
Catch 100 fish.
Make 10 swords.
Cook 2,000 food.
Find 800 mushrooms.
Pick 15 locks.
Achieve 70 fame.
Hunt down 20 rabbits.
Learn the mining skill.
Learn the smithing skill.
Visit the Gray Valley.
Learn the lockpicking skill.
Kill 150 monsters.
Have at least 100 strength.
Find some treasure.
Learn the alchemy skill.
Learn the herbalism skill.
Save the mayor of the Yellow Valley.
Find 30 lost crates and barrels.
Find 100 eggs.
Find 6 pearls.
Find 200 mushrooms.
Visit the Yellow Valley.
Kill 50 monsters.
Learn the fishing skill.
Learn the cooking skill.