Here is the full list of all 35 Rogue Galaxy trophies - there are 19 bronze, 10 silver, 5 gold and 1 platinum.
Unlock all trophies.
Reach level 99 with any character.
Become the rank S Insectron champion.
Win a game of Insectron.
Upgrade all legendary Seven-Star Swords to their final form.
Complete all 36 blueprints in the Factory.
Defeat Doppelganger in the Ghost Ship Extreme.
Receive the Key to the Underworld by completing the Seventh Mystery.
Inflict over 14,000 damage with a Burning Strike attack.
Obtain the Mirror of Truth.
Obtain the Rakshasa Heart item.
Defeat the Demon Battleship.
Complete Chapter Twelve.
Complete every Quarry hunt.
Reach the top Hunter's Rank.
Complete Chapter Eleven.
Complete Chapter Ten.
Obtain the Earth, Star, and Sun keys.
Complete Chapter Nine.
Complete Chapter Eight.
Learn a level three ability with Jaster.
Complete Chapter Seven.
Complete Chapter Six.
Complete Chapter Five.
Assemble your first item in the factory.
Kill 10 enemies with thrown objects.
Complete Chapter Four.
Complete Chapter Three.
Use Toady to synthesize a new item.
Change a character into an alternate outfit.
Complete Chapter Two.
Succesfully execute a Burning Strike attack.
Defeat a Mimic.
Complete Chapter One.
Disarm a trap set on a treasure chest.