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