Here is the full list of all 59 Dragon's Dogma: Dark Arisen achievements. It takes around 80-100 hours to unlock all of the achievements on Windows.
Completed game in Speedrun mode.
Enlisted a large number of pawns.
Reached LV 200.
Obtained 350 pieces total of weapons and armor.
Completed all pre-planned, non-notice board quests.
Completed game in Hard Mode.
Completed the adventure a second time.
Took refuge in an illusion.
Soar unto a new world.
Dressed a male party member in women's clothing.
Earned a total of 10,000,000G.
Defeated Daimon in his true form.
Defeated a drake, wyrm, and wyvern.
Defeated the Ur-Dragon.
Gave 50 presents.
Defeated Daimon for the first time.
Entered the duke's manse.
Defeated Death in Bitterblack Isle.
Defeated a hydra or archydra.
Defeated the Dark Bishop in Bitterblack Isle.
Reached LV 100.
Entered the Soulflayer Canyon.
Completed 50 notice board quests.
Helped Madeleine open her shop.
Acted as a reliable travel companion.
Defeated 3,000 enemies.
Put an end to all things.
Dealt the blow of deliverance.
Escaped the yoke of eternity.
Visited 150 locations.
Defeated an evil eye.
Peered into the very depths of the world.
Accepted the Godsbane blade.
Strengthened equipment in wyrmfire.
Obtained the almighty power of sovereignty.
Defeated the Gazer in Bitterblack Isle.
Obtained a forgery.
Learned all the skills of a single vocation.
Completed the urgent mission.
Received the duke's commendation.
Visited 100 locations.
Raised a person's affinity to the maximum.
Changed your main pawn's vocation.
Attended an audience with the duke.
Entered the southwestern caves.
Entered the ancient quarry.
Used a Wakestone to restore the dead to life.
Received a writ from the castle.
Combined two materials to make an item.
Visited 50 locations.
Changed your vocation.
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.