Here is the full list of all 44 Dynasty Warriors 9 trophies - there are 25 bronze, 16 silver, 2 gold and 1 platinum.
Discovered a scenic area.
Completed a key mission.
Defeated 1,000 enemies with bow attacks.
Defeated 100 enemies with bow attacks.
Unlocked 45 officers.
Caught 30 items while fishing.
Raised an officer's Attack to 900.
Obtained a High-class weapon.
Obtained 10 pieces of furniture.
Earned a total of 90,000 gold.
Defeated a powerful enemy.
Obtained a hideaway.
Destroyed 100 structures.
Defeated 1,000 enemies in a single battle.
Achieved a 1,000 hit combo.
Completed a mission within 1 minute.
Unlocked an officer.
Completed the tutorial for one of the kingdoms.
Obtained all of the trophies in the game.
Unlocked all of the officers.
Earned a total of 100,000 K.O.s.
Raised an officer to the highest level.
Raised a horse to the highest level.
Formed a bond at the maximum level with 20 officers.
Obtained 10 hideaways.
Completed the story of Wei.
Completed the story of Wu.
Completed the story of Shu.
Completed the story of Jin.
Completed the stories of the kingdoms other than Wei, Wu, Shu, and Jin.
Earned a total of 5,000 Hunting Points.
Unlocked all battle entries in the Encyclopedia.
Discovered 75% of the locations in the game.
Defeated 1,000 enemies while mounted on a horse.
Defeated 100 enemies with assault attacks.
Juggled an enemy in the air for 5 seconds.
Discovered 35% of the locations in the game.
Obtained 20 gems.
Obtained 30 weapons.
Performed synthesis 100 times.
Formed a bond at the maximum level with another officer.
Ate 100 meals.
Obtained 30 items by using box traps.
Completed a story.