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