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