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