Below is the list of Xbox 360 Achievements and PS3 trophies for Dynasty Warriors 8. True, DW8 might be the same as DW7, DW6, DW5..., but the achievements and trophies are not, so why not make them your goal?
True Warrior of the 3 Kingdoms - 100G - Platinum
Obtained all achievements / trophies in the game.
Master of Chaos - 60G - Gold
Completed all of the stages on the "Chaos" difficulty level.
Unwavering Ambition - 60G - Gold
Fought 50 straight battles in Ambition Mode.
Weapon Collector - 30G - Silver
Obtained all of the weapons in the game.
Heaven and Earth - 30G - Silver
Built a Tongquetai and welcomed the Emperor to your town.
A Shout of Triumph - 30G - Silver
Finished all of the stages within Story Mode and Free Mode with the exception of the tutorial.
The Land of Plenty - 30G - Silver
Obtained more than 1,000 materials for weapons and facilities in Ambition Mode.
The Ties that Bind Us - 30G - Silver
Became allies with all of the officers in Ambition Mode.
The Height of Prosperity - 30G - Silver
Obtained all of the facilities in Ambition Mode.
A Majestic Manner - 30G - Silver
Reached the maximum Fame level in Ambition Mode.
A Collector of Rarities - 30G - Silver
Obtained all of the Camp Symbols.
Battle-hardened Veteran - 30G - Silver
Won 100 battles with the same officer.
The Path of Ambition - 30G - Silver
Fought 20 straight battles in Ambition Mode.
An Intricate Tale - 30G - Silver
Completed all of the stages in Story Mode.
Revelation - 30G - Silver
Upgraded all skills to Level 10 or higher.
Friends to the End - 30G - Silver
Formed a bond at the maximum level with another officer.
The Destroyer - 30G - Silver
Destroyed a total of 1,000 siege weapons.
Facility Construction - 10G - Bronze
Had a new facility built in Ambition Mode.
Facility Expansion - 10G - Bronze
Had a facility expanded in Ambition Mode.
The Birth of a Leader - 10G - Bronze
Fought 5 straight battles in Ambition Mode.
Death from Above - 10G - Bronze
Defeated an enemy after juggling them in the air for at least 10 seconds.
True Rage - 10G - Bronze
Used a True Rage Attack.
In an Instant - 10G - Bronze
Defeated 3 enemy officers with a Storm Rush in a single battle.
Comeback Kid - 10G - Bronze
Defeated 3 enemy officers with a Switch Counter in a single battle.
King of the Combos - 10G - Bronze
Achieved a 1,000 hit combo.
One Warrior vs. a Thousand - 10G - Bronze
Defeated 1,000 enemies in a single battle.
Graduation Day - 10G - Bronze
Completed the tutorials for all of the kingdoms.
Mounted Terror - 10G - Bronze
Defeated 1,000 enemies while mounted on a riding-type animal.
The Beastmaster Awakens - 10G - Bronze
Defeated 100 enemies with a companion-type animal.
Vocal Enthusiast - 10G - Bronze
Listened to all of the voice lines within the Gallery.
Animal Collector - 10G - Bronze
Obtained all of the animals within the game.
Movie Collector - 10G - Bronze
Unlocked all of the movies within the game.
Event Collector - 10G - Bronze
Unlocked all of the event scenes within the game.
Wallpaper Collector - 10G - Bronze
Unlocked all of the wallpapers within the game.
Like a Shadow - 10G - Bronze
Finished any stage of the game, except for the tutorial, without taking any damage.
Unstoppable Might - 30G - Silver
Defeated a total of more than 100,000 enemies.
Legend of Wei - 30G - Silver
Viewed the ending (Historical & Hypothetical) for the Wei story.
Legend of Wu - 30G - Silver
Viewed the ending (Historical & Hypothetical) for the Wu story.
Legend of Shu - 30G - Silver
Viewed the ending (Historical & Hypothetical) for the Shu story.
Legend of Jin - 30G - Silver
Viewed the ending (Historical & Hypothetical) for the Jin story.
Untold Legends - 30G - Silver
Completed all of the stages for the Other story.