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