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