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.
Entered the southwestern caves.
Attended an audience with the duke.
Entered the Soulflayer Canyon.
Acted as a reliable travel companion.
Visited 100 locations.
Helped Madeleine open her shop.
Dressed a male party member in women's clothing.
Used a Wakestone to restore the dead to life.
Directly enlisted a pawn to your party.
Received a writ from the castle.
Entered the ancient quarry.
Visited 50 locations.
Changed your main pawn's vocation.
Changed your vocation.
Entered Gran Soren.
Entered the azure caverns.
Enlisted a pawn to your party from beyond the rift.
Earned the approval of the Enlistment Corps.
Summoned your own pawn.
Combined two materials to make an item.
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.
Enlisted a large number of pawns.
Obtained a forgery.
Strengthened equipment in wyrmfire.
Obtained 350 pieces total of weapons and armor.
Gave 50 presents.
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.