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.
Defeated the Gazer in Bitterblack Isle.
Defeated 3,000 enemies.
Defeated a hydra or archydra.
Visited 150 locations.
Defeated an evil eye.
Peered into the very depths of the world.
Strengthened equipment in wyrmfire.
Accepted the Godsbane blade.
Completed the urgent mission.
Received the duke's commendation.
Visited 100 locations.
Attended an audience with the duke.
Changed your main pawn's vocation.
Changed your vocation.
Obtained a forgery.
Entered the southwestern caves.
Entered the ancient quarry.
Visited 50 locations.
Directly enlisted a pawn to your party.
Used a Wakestone to restore the dead to life.
Received a writ from the castle.
Entered Gran Soren.
Combined two materials to make an item.
Earned the approval of the Enlistment Corps.
Enlisted a pawn to your party from beyond the rift.
Entered the azure caverns.
Summoned your own pawn.
Departed from Cassardis.
Completed the prologue.
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 a drake, wyrm, and wyvern.
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.
Gave 50 presents.
Acted as a reliable travel companion.
Entered the Soulflayer Canyon.
Entered the duke's manse.
Completed the adventure a second time.
Earned a total of 10,000,000G.
Helped Madeleine open her shop.
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 Dark Bishop in Bitterblack Isle.
Completed game in Speedrun mode.