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