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