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.
Directly enlisted a pawn to your party.
Earned the approval of the Enlistment Corps.
Summoned your own pawn.
Entered the azure caverns.
Departed from Cassardis.
Combined two materials to make an item.
Completed the prologue.
Entered Gran Soren.
Received a writ from the castle.
Attended an audience with the duke.
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.
Changed your vocation.
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 pawn to your party from beyond the rift.
Enlisted a large number of pawns.
Changed your main pawn's vocation.
Used a Wakestone to restore the dead to life.
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.
Raised a person's affinity to the maximum.
Entered the ancient quarry.
Entered the Soulflayer Canyon.
Entered the duke's manse.
Entered the southwestern caves.
Visited 50 locations.
Visited 100 locations.
Visited 150 locations.
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 Gazer in Bitterblack Isle.
Defeated the Dark Bishop in Bitterblack Isle.
Completed game in Speedrun mode.