Here is the full list of all 44 WARRIORS OROCHI 3 Ultimate Definitive Edition achievements.
Performed all of the special Triple Rush attacks.
Used a special Triple Rush attack.
Cleared a battlefield in Musou Battlefields for the first time.
Performed a Formation Attack in Gauntlet Mode.
Cleared 5 straight stages in Gauntlet Mode.
Maxed out Bonds with one of these officers: Momiji, Kasumi, Sterkenburg or Sophitia.
Played a match against the CPU for the first time in Duel Mode.
Defeated 10,000 enemies.
Changed the color of an officer's costume.
Cleared the stage "Revenge of the Fox" in Story Mode.
Cleared the stage "Rescue of the Mystics" in Story Mode.
Made it through 50 Survival battles in Duel Mode.
Played Survival for the first time in Duel Mode.
Used the Craft command for the first time.
Cleared the stage "Escape from the Mystic Realm" in Story Mode.
Used a Strategy Card for the first time in Duel Mode.
Played a match with another player for the first time in Duel Mode.
Found Kyūbi's nine tails and defeated them.
Unlocked Momiji, Kasumi, Sterkenburg and Sophitia as playable characters.
Cleared the stage "Showdown at Odawara Castle" in Story Mode.
Found Kyūbi's tail and defeated it for the first time in Story Mode.
Cleared the stage "War against the Serpent King" in Story Mode.
Unlocked Yinglong as a playable character.
Cleared the stage "Battle of Itsukushima" in Story Mode.
Cleared the stage "The Imprisonment of Tamamo" in Story Mode.
Obtained a Mystic Weapon for the first time.
Performed a mounted True Triple Attack.
Unlocked all of the playable characters within Gauntlet Mode.
Cleared Gauntlet Mode for the first time.
Promoted a single officer a total of 3 times.
Defeated an Otherworld Invader in Gauntlet Mode.
Completed a request for the first time in Gauntlet Mode.
Summoned an ally for the first time in Gauntlet Mode.
Cleared a stage for the first time in Gauntlet Mode.
Obtained a Scroll of Enlightenment.
Used a True Musou Burst.
Changed your character's battle style.
Used an aerial Special Attack.
Accomplished all of the Achievements in the game.
Obtained all of the Strategy Cards in the game.
Obtained all of the Mystic Weapons.
Used the Craft command 100 times.
Completed all of the requests within Gauntlet Mode.
Cleared all of the stages within Gauntlet Mode.