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.
Raised a person's affinity to the maximum.
Attended an audience with the duke.
Helped Madeleine open her shop.
Used a Wakestone to restore the dead to life.
Visited 100 locations.
Changed your vocation.
Changed your main pawn's vocation.
Entered the southwestern caves.
Entered the ancient quarry.
Visited 50 locations.
Received a writ from the castle.
Entered Gran Soren.
Entered the azure caverns.
Earned the approval of the Enlistment Corps.
Combined two materials to make an item.
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.
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.
Obtained a forgery.
Strengthened equipment in wyrmfire.
Obtained 350 pieces total of weapons and armor.
Dressed a male party member in women's clothing.
Gave 50 presents.
Acted as a reliable travel companion.
Entered the Soulflayer Canyon.
Entered the duke's manse.
Visited 150 locations.
Completed the adventure a second time.
Earned a total of 10,000,000G.
Defeated Death in Bitterblack Isle.
Defeated Daimon for the first time.
Defeated Daimon in his true form.
Completed game in Hard Mode.
Reached LV 100.
Reached LV 200.
Defeated the Gazer in Bitterblack Isle.
Defeated the Dark Bishop in Bitterblack Isle.
Completed game in Speedrun mode.