Here is the full list of all 39 Little Noah: Scion of Paradise achievements.
Earn 59 badges in the adventurer's log.
Obtain 100 green crystals.
Red Crystal
Max out your bond with 40 different Lilliputs.
Obtain 100 blue crystals.
Obtain 10 different Avatars.
Log 142 different accessories.
Repair the airship 75 times.
Clear the game on HARD difficulty.
Defeat 50 Rascals.
Complete 200 challenges.
Defeat Greigh Little without taking any damage.
Defeat Greigh without taking any damage.
Defeat Fang (Ice).
Defeat Greigh Little.
Defeat 2,000 enemies.
Clear 25 monster lairs.
Open 500 treasure boxes.
Buy 100 shop items.
Defeat Titan (Hammer).
Defeat Fang (Wind).
Defeat a Fang without taking any damage.
Use a potion 30 times.
Defeat Greigh.
Log 40 different Lilliputs.
Use 20 Ruin Keys.
Reach the depths of the ruins.
Activate Avatar Burst 30 times.
Achieve a 150 hit combo.
Defeat Titan (Glaive).
Defeat a Titan without taking any damage.
Defeat Queen.
Max out a Lilliput's level for the first time.
Defeat Jack.
Reach the Winding Caverns.
Defeat King.
Place a statue on the airship for the first time.
Switch Noah's Avatar for the first time.
Begin exploring the ruins.