Here is the full list of all 44 Warriors Orochi 3 Ultimate achievements worth 1,000 gamerscore.
Cleared 5 straight stages in Gauntlet Mode.
Unlocked Momiji, Kasumi, Sterkenburg and Sophitia as playable characters.
Cleared the stage "Rescue of the Mystics" in Story Mode.
Changed the color of an officer's costume.
Played a match against the CPU for the first time in Duel Mode.
Maxed out the Bonds with one of the following officers: Momiji, Kasumi, Sterkenburg or Sophitia.
Summoned an ally for the first time in Gauntlet Mode.
Cleared Gauntlet Mode for the first time.
Cleared the stage "Revenge of the Fox" in Story 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.
Unlocked Yinglong as a playable character.
Cleared the stage "Battle of Itsukushima" in Story Mode.
Played Survival for the first time in Duel Mode.
Used a Strategy Card for the first time in Duel Mode.
Played a match online or with another player for the first time in Duel Mode.
Changed your character's battle style.
Promoted a single officer a total of 3 times.
Used the Craft command for the first time.
Used an aerial Special Attack.
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.
Obtained a Mystic Weapon for the first time.
Used a True Musou Burst.
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.
Find Kyūbi's nine tails and defeat them.
Clear the stage "Escape from the Mystic Realm" in Story Mode.
Defeat 10,000 enemies.
Clear the stage "War against the Serpent King" in Story Mode.
Clear the stage "The Imprisonment of Tamamo" in Story Mode.
Clear a battlefield in Musou Battlefields for the first time.
Perform a Formation Attack in Gauntlet Mode.
Use a special Triple Rush attack.
Perform a mounted True Triple Attack.