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