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