Here is the full list of all 35 Trinity Trigger achievements.
Opened 300 treasure chests (excluding certain special chests).
Began a new journey as a demigod.
Foiled the plans of Igment, God of Deceit.
Defeated 5,000 enemies.
Found 5 nice souvenirs for Firn.
Awakened new Trigger powers.
Pursued Ahter after he abducted Violet.
Reached level 45 with one party member.
Held over 500,000 Liba at once.
Bid farewell to the Diamond Wings and headed toward Stahl.
Lost decisively in a mock duel against Violet.
Traveled through the Waterways to avoid the sandstorm and met the Diamond Wings.
Discovered 20 different Manatite effects.
Opened 100 treasure chests (excluding certain special chests).
Held over 100,000 Liba at once.
Found 1 nice souvenir for Firn.
Reached level 20 with one party member.
Defeated 1,000 enemies.
Recruited Zantis, a War Oracle of the Sun God.
Discovered 5 different Manatite effects.
Embarked on a journey with Elise to prevent the God Warriors' duel.
Partnered up with Flamme.
Opened 10 treasure chests (excluding certain special chests).
Triumphed over Fasti the Chronicler in battle.
Proved your strength to Libras, God of Harmony.
Fulfilled all requests.
Crafted 10 times at a shop.
Crafted 100 times at a shop.
Upgraded any weapon to its final form.
Defeated the First Memory.
Defeated the Second Memory.
Defeated the Third Memory.
Defeated the Fourth Memory.
Defeated the Fifth Memory.
Deciphered every obelisk inscription.