Here is the full list of all 48 Dynasty Warriors 8: Empires achievements.
Clear any scenario on the "Chaos" difficulty.
Perform a betrayal for the first time.
Win a battle with significantly less allied forces than enemy ones.
Get recruited as a Marshal or Strategist from being a Free Officer.
Build at least six of the same facility.
Fight your way into enemy territory alone and defeat an officer.
Became a Ruler for the first time.
Raise the banner of your own Kingdom for the first time.
Complete a Quest and deepen your friendship with your Ruler.
Use any custom character to defeat all of the famous officers.
Have a total of at least 5 children.
View any of the endings using a custom character.
Use at least 100 Stratagems.
Be appointed as a Strategist for the first time.
Have a child for the first time.
Get married for the first time.
Succeed your superior's position for the first time.
Be appointed as a Marshal for the first time.
Obtain virtue of "Saint."
Have at least three officers declare their love for you in a single lifetime.
Swear a sworn sibling oath for the first time.
Receive a weapon or item as a gift for the first time.
In Edit Mode, create at least one officer, banner, warhorse and soldier.
Build a facility for the first time.
Capture 10 or more bases during a single battle.
Profess your love for someone or have someone confess their love for you for the first time.
Complete four Battle Objectives in a single battle.
Stop a Large Scale Stratagem being prepared by the enemy.
Obtain 20 officers in your own Kingdom.
Complete a Strategy Objective for the first time.
Fight and win a stage in spring, summer, fall and winter.
Win a battle with more than 90% of your total forces remaining.
Complete your first mission.
Accomplish all of the achievements in the game.
Complete all lifestyles.
Achieve all titles.
Obtain at least 100 weapons.
Obtain at least 30 items.
Defeat more than 10,000 enemies using just Stratagems.
Execute all Strategy Commands at least once.
Make all famous officers into your subordinate officers.
View all of the events that can be watched in the Gallery.
Rise in rebellion and become Ruler.
Create a Kingdom comprised entirely of your sworn siblings, spouses and children.
Have a subordinate officer abandon you for the first time.
Use a Stratagem to change the weather.
Take part in "Battle of Chibi - Allied Forces" & have Zhuge Liang's "Southeast Wind" strategy work.
Obtain virtue of "Pure Evil."