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