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