Here is the full list of all 51 Dragon's Dogma trophies - there are 42 bronze, 5 silver, 3 gold and 1 platinum.
Entered the azure caverns.
Directly enlisted a pawn to your party.
Enlisted a pawn to your party from beyond the rift.
Earned the approval of the Enlistment Corps.
Completed the prologue.
Departed from Cassardis.
Summoned your own pawn.
Earned a total of 10,000,000G.
Learned all the skills of a single vocation.
Completed 50 notice board quests.
Put an end to all things.
Dealt the blow of deliverance.
Escaped the yoke of eternity.
Visited 150 locations.
Dressed a male party member in women's clothing.
Defeated a hydra or archydra.
Entered the Soulflayer Canyon.
Defeated an evil eye.
Peered into the very depths of the world.
Strengthened equipment in wyrmfire.
Accepted the Godsbane blade.
Completed the urgent mission.
Defeated 3,000 enemies.
Received the duke's commendation.
Raised a person's affinity to the maximum.
Attended an audience with the duke.
Visited 100 locations.
Acted as a reliable travel companion.
Entered the southwestern caves.
Obtained a forgery.
Helped Madeleine open her shop.
Received a writ from the castle.
Changed your main pawn's vocation.
Entered the ancient quarry.
Used a Wakestone to restore the dead to life.
Combined two materials to make an item.
Visited 50 locations.
Changed your vocation.
Entered Gran Soren.
Collected all other Dragon's Dogma trophies.
Obtained the almighty power of sovereignty.
Soar unto a new world.
Took refuge in an illusion.
Completed all pre-planned, non-notice board quests.
Defeated a drake, wyrm, and wyvern.
Defeated the Ur-Dragon.
Enlisted a large number of pawns.
Obtained 350 pieces total of weapons and armor.
Gave 50 presents.
Entered the duke's manse.
Completed the adventure a second time.