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 Hard Mode.
Defeated Daimon in his true form.
Reached LV 200.
Defeated the Ur-Dragon.
Completed game in Speedrun mode.
Completed the adventure a second time.
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 Death in Bitterblack Isle.
Defeated Daimon for the first time.
Defeated the Dark Bishop in Bitterblack Isle.
Reached LV 100.
Earned a total of 10,000,000G.
Defeated the Gazer in Bitterblack Isle.
Defeated a drake, wyrm, and wyvern.
Defeated a hydra or archydra.
Obtained 350 pieces total of weapons and armor.
Defeated an evil eye.
Peered into the very depths of the world.
Accepted the Godsbane blade.
Obtained the almighty power of sovereignty.
Visited 150 locations.
Completed the urgent mission.
Entered the duke's manse.
Received the duke's commendation.
Completed 50 notice board quests.
Helped Madeleine open her shop.
Attended an audience with the duke.
Defeated 3,000 enemies.
Learned all the skills of a single vocation.
Entered the Soulflayer Canyon.
Visited 100 locations.
Entered the ancient quarry.
Enlisted a large number of pawns.
Directly enlisted a pawn to your party.
Dressed a male party member in women's clothing.
Entered the southwestern caves.
Strengthened equipment in wyrmfire.
Obtained a forgery.
Received a writ from the castle.
Changed your vocation.
Changed your main pawn's vocation.
Used a Wakestone to restore the dead to life.
Visited 50 locations.
Gave 50 presents.
Entered Gran Soren.
Raised a person's affinity to the maximum.
Entered the azure caverns.
Acted as a reliable travel companion.
Earned the approval of the Enlistment Corps.
Summoned your own pawn.
Enlisted a pawn to your party from beyond the rift.
Combined two materials to make an item.
Departed from Cassardis.
Completed the prologue.