Here is the full list of all 32 Arc the Lad: Twilight of the Spirits trophies - there are 12 bronze, 14 silver, 5 gold and 1 platinum.
Collect all trophies.
Defeat the Lord of the Black Abyss.
Complete the Rivalry chapter.
Reach level 50 with a companion.
Complete the Mark of Devils, Road of Bravery, Enlightenment's Path, and Title of Demons Arena challenges.
Reach level 50 with Kharg.
Equip one character with three Romantic Earrings.
Learn every skill for Kharg and Darc.
Win Diekbeck from the Cathena Arena.
Bring all five Spirit Dictionaries to Span.
Complete the Evolution chapter.
Reach level 50 with Darc.
Defeat Droguza in his altered Deimos form.
Win Choco from the Rueloon arena.
Learn an 8-star skill.
Consume a Bountiful Fruit.
Collect all of the Ancient Tablets.
Complete the Truth chapter.
Complete the Reunion chapter.
Complete the Rage chapter.
Complete the Love and Hate chapter.
Complete the Conflict chapter.
Complete the Ambition chapter.
Use Mind Control to take control of an enemy.
Feed the Pyron some food.
Obtain the Gorgeous Ring.
Complete the Setting Out chapter.
Steal an item from an enemy.
Complete the Awakening chapter.
Complete The First Battle.
Perform a dual attack.
Have a healer return your party to full health.