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