Here is the full list of all 31 Kids of Hellas: Back to Olympus achievements.
Find 40 puzzle pieces!
Earn all the achievements!
Encounter a patrolling enemy 30 times!
Complete 30 levels with 3 stars!
Repair the ancient Greek ship!
Find 20 puzzle pieces!
Activate the "Freezing time" bonus three times on the same level!
Use all the bonuses at least once while playing the game!
Gather 500 units of gold!
Complete 10 levels!
Complete 10 levels with 3 stars!
Erect 30 buildings!
Find 10 puzzle pieces!
Use your skill 20 times!
Assign 1000 tasks to the kids!
Encounter a patrolling enemy once!
Activate the "Speed up character" bonus three times on the same level!
Use two bonuses simultaneously!
Cancel a task 30 times!
Find the first puzzle piece!
Complete the level without using skills!
Complete any level with three stars without using any bonuses!
Summon 5 kids simultaneously!
Gather 500 units of food!
Gather 100 units of gold!
Use your skill
Repair the mana well!
Gather 100 units of food!
Cancel a task!
Complete the 1st level!
Complete one level with 3 stars!