Here is the full list of all 44 Warriors Orochi 3 Ultimate achievements worth 1,000 gamerscore.
Promoted a single officer a total of 3 times.
Found Kyūbi's tail and defeated it for the first time in Story Mode.
Cleared the stage "Escape from the Mystic Realm" in Story Mode.
Cleared the stage "Rescue of the Mystics" 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.
Completed a request for the first time in Gauntlet Mode.
Used a True Musou Burst.
Obtained a Mystic Weapon for the first time.
Defeated an Otherworld Invader in Gauntlet Mode.
Changed the color of an officer's costume.
Cleared a battlefield in Musou Battlefields for the first time.
Played Survival for the first time in Duel Mode.
Used a Strategy Card for the first time in Duel Mode.
Used an aerial Special Attack.
Played a match against the CPU for the first time in Duel Mode.
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.
Use the Craft command 100 times.
Unlock all of the playable characters within Gauntlet Mode.
Complete all of the requests within Gauntlet Mode.
Clear all of the stages within Gauntlet Mode.
Clear Gauntlet Mode for the first time.
Find Kyūbi's nine tails and defeat them.
Clear the stage "Showdown at Odawara Castle" in Story Mode.
Clear the stage "Revenge of the Fox" in Story Mode.
Defeat 10,000 enemies.
Max out the Bonds with one of the following officers: Momiji, Kasumi, Sterkenburg or Sophitia.
Clear the stage "The Imprisonment of Tamamo" in Story Mode.
Use the Craft command for the first time.
Summon an ally for the first time in Gauntlet Mode.
Clear 5 straight stages in Gauntlet Mode.
Clear a stage for the first time in Gauntlet Mode.
Perform a Formation Attack in Gauntlet Mode.
Play a match online or with another player for the first time in Duel Mode.
Use a special Triple Rush attack.
Change your character's battle style.
Unlock Momiji, Kasumi, Sterkenburg and Sophitia as playable characters.
Perform a mounted True Triple Attack.