Here is the full list of all 42 Romancing SaGa 3 trophies - there are 22 bronze, 18 silver, 1 gold and 1 platinum.
Nora joined your party.
Minstrel joined your party.
Collected all trophies.
Watched Julian's ending.
Watched Ellen's ending.
Watched Thomas's ending.
Watched Sarah's ending.
Watched Khalid's ending.
Watched Monika's ending.
Watched Mikhail's ending.
Watched Katarina's ending.
Runaway girl joined your party.
Muse joined your party.
Charl joined your party.
Young Boy joined your party.
Robin joined your party.
Ward joined your party.
Paul joined your party.
Herman joined your party.
Herman regained his strength.
Fullbright joined your party.
Zhi Ling joined your party.
Yang Fan joined your party.
Bai Meiniang joined your party.
Boston joined your party.
Peony joined your party.
Rukh joined your party.
Flurry joined your party.
Undine joined your party.
Tiberius joined your party.
Leonid joined your party.
All smiths returned.
Defeated Alloces.
Defeated Aunus.
Defeated Forneus.
Defeated Buné.
Defeated Buné & Gwayne.
Defeated Maximus.
Defeated Galatea.
Defeated Oblivion.
Defeated Oblivion's true form.
Defeated Abyss League via trading.