Here is the full list of all 44 Warriors Orochi 3 Ultimate achievements worth 1,000 gamerscore.
Obtained all of the Mystic Weapons.
Unlocked all of the playable characters within Gauntlet Mode.
Cleared all of the stages within Gauntlet Mode.
Cleared 5 straight stages in Gauntlet Mode.
Used the Craft command 100 times.
Obtained a Mystic Weapon for the first time.
Performed a Formation Attack in Gauntlet Mode.
Cleared Gauntlet Mode for the first time.
Used the Craft command for the first time.
Defeated 10,000 enemies.
Completed a request for the first time in Gauntlet Mode.
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.
Cleared the stage "Rescue of the Mystics" in Story Mode.
Cleared the stage "Revenge of the Fox" in Story Mode.
Maxed out the Bonds with one of the following officers: Momiji, Kasumi, Sterkenburg or Sophitia.
Cleared the stage "Escape from the Mystic Realm" in Story Mode.
Found Kyūbi's nine tails and defeated them.
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.
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.
Promoted a single officer a total of 3 times.
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.
Make it through 50 Survival battles in Duel Mode.
Complete all of the requests within Gauntlet Mode.
Clear a battlefield in Musou Battlefields for the first time.
Play a match against the CPU for the first time in Duel Mode.
Play a match online or with another player for the first time in Duel Mode.
Play Survival for the first time in Duel Mode.
Use a Strategy Card for the first time in Duel Mode.
Use a special Triple Rush attack.
Unlock Momiji, Kasumi, Sterkenburg and Sophitia as playable characters.