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