Here is the full list of all 49 Dynasty Warriors Next trophies - there are 38 bronze, 7 silver, 3 gold and 1 platinum.
Obtained all of the available Officer Cards.
Formed a sworn oath with all of the officers.
Successfully completed all of the Sudden Encounters with the best possible rating.
Successfully completed all of the Sudden Encounters.
Obtained all of the available Edit Character parts.
Defeated more than 100,000 enemies.
Earned 1,000,000 Exp.
Cleared the Conquest Mode a total of 5 times.
Completed a five forces map in Conquest Mode.
Completed a four forces map in Conquest Mode.
Achieved the best possible Governance Rating.
Completed a three forces map in Conquest Mode.
Formed a marriage pact with another officer.
Formed a sworn oath with another officer.
Achieved the worst possible Governance Rating.
Cleared the stage, "An Endless Quest."
Cleared all of the stages in the game.
Cleared the stage, "A Land United."
Viewed all of the movies in the game.
Created 10 Edit Characters.
Cleared the stage, "A Man of Virtue."
Earned 500,000 Exp.
Completed a two forces map in Conquest Mode.
Cleared the stage, "The Tiger's Advance."
Completed a battle in either Campaign Mode or Conquest Mode without taking any damage.
Cleared the stage, "Quiet Ambition."
Defeated 3,000 enemies in one battle.
Cleared the stage, "The Kingdom in Three."
Completed Steeplechase, Bastion, Marksman and Calligrapher within the Gala Mode.
Cleared the stage, "Battle of Chibi."
Cleared the stage, "The Three Visits."
Obtained all of the available orbs.
Cleared the stage, "The Struggle for Power."
Earned 100,000 Exp.
Took a picture using the Musou Snapshot feature of the Gala Mode.
Cleared the stage, "Conqueror of Jiangdong."
Cleared the stage, "Anti-Dong Zhuo Coalition."
Defeated Lu Bu in the Campaign Mode.
Cleared the stage, "Yellow Turban Rebellion."
Defeated 1,000 enemies in one battle.
Completed a 500 hit combo.
Created a save data file.
Obtained all trophies.
Cleared the Conquest Mode a total of 50 times.
Completed all of the battles within the Coalition Mode.
Obtained all of the available weapons.
Obtained all of the available growth items.
Obtained all of the available armor.
Formed a marriage pact with all of the officers.