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