Here is the full list of all 43 Romancing SaGa 2 trophies - there are 32 bronze, 7 silver, 3 gold and 1 platinum.
Acquired all trophies
Defeated Dread Queen
Finished Game without Final Emperor
Finished the Game
Defeated Subier
Defeated Ruined Memory
Won Against Victor
Defeated Crushing Memory
Defeated Sinful Memory
Befriended a Ninja
Defeated Evil Memory
Defeated Wagnas
Befriended an Iris
Befriended a Levante Guard
Befriended a Diver
Befriended an Amazon
Became the Final Emperor
Defeated Rocbouquet
Befriended a Desert Guard
Defeated Noel
Befriended a Nomad
Defeated Bokhohn
Acquired Dark Magic
Defeated Dantarg
Befriended a Mage for Hire
Nurtured the Avalon Tree to the fullest
Befriended a Diviner
Befriended a Salamander
Coppelia became Emperor
Befriended a Nereid
Befriended an Imperial Guard
Befriended an Armed Merchant
Befriended Coppelia
Befriended a Mole
Befriended a Hunter
Befriended a Strategist
Befriended a Saigo Clansman
Befriended a Crusader
Befriended a Vagabond
Befriended a Brawler
Defeated Kzinssie
Gerard became Emperor
Defeated the Watchmen