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