Here is the full list of all 44 Warriors Orochi 3 Ultimate achievements worth 1,000 gamerscore.
Found Kyūbi's nine tails and defeated them.
Found Kyūbi's tail and defeated it for the first time in Story Mode.
Unlocked all of the playable characters within Gauntlet Mode.
Cleared Gauntlet Mode 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 a battlefield in Musou Battlefields for the first time.
Played a match online or with another player for the first time in Duel Mode.
Cleared the stage "War against the Serpent King" in Story Mode.
Used a special Triple Rush attack.
Cleared the stage "Battle of Itsukushima" in Story Mode.
Used the Craft command 100 times.
Cleared the stage "Escape from the Mystic Realm" in Story Mode.
Played Survival for the first time in Duel Mode.
Maxed out the Bonds with one of the following officers: Momiji, Kasumi, Sterkenburg or Sophitia.
Cleared the stage "Showdown at Odawara Castle" in Story Mode.
Cleared the stage "The Imprisonment of Tamamo" in Story Mode.
Defeated 10,000 enemies.
Performed a Formation Attack in Gauntlet Mode.
Promoted a single officer a total of 3 times.
Obtained a Mystic Weapon for the first time.
Unlocked Momiji, Kasumi, Sterkenburg and Sophitia as playable characters.
Completed a request for the first time in Gauntlet Mode.
Used the Craft command for the first time.
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.
Changed the color of an officer's costume.
Used a Strategy Card for the first time in Duel Mode.
Played a match against the CPU for the first time in Duel Mode.
Performed a mounted True Triple Attack.
Used an aerial Special Attack.
Used a True Musou Burst.
Changed your character's battle style.
Obtained a Scroll of Enlightenment.
Accomplish all of the Achievements in the game.
Obtain all of the Strategy Cards in the game.
Perform all of the special Triple Rush attacks.
Obtain all of the Mystic Weapons.
Make it through 50 Survival battles in Duel Mode.
Complete all of the requests within Gauntlet Mode.
Clear all of the stages within Gauntlet Mode.
Clear 5 straight stages in Gauntlet Mode.
Unlock Yinglong as a playable character.