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