Here is the full list of all 38 WARRIORS ALL-STARS achievements.
Collected all achievements.
Sealed Yomi away and saved the world.
Received the maximum level of Regard from every character towards any one character.
Cleared all Story, Hero and Dramatic Battles.
Unlocked all actions for every character.
Parted ways with Tamaki in order to protect her.
Displayed the strength of a hero.
Captured an evildoer.
Put on an act in order to save the world.
Cleared Story Mode in 3 hours or less.
Proved that you are the strongest.
Unified the world and then gave it away.
Became the ultimate idol in this world.
Lost your memory... again.
Decided to live as a kunoichi in this new world.
Was sent back forcefully.
Led Setsuna to become the new ruler.
Viewed bathing events for every character.
Viewed level 3 conversation event with any one character in the Sanctuary.
Led Shiki to become the new ruler.
Led Tamaki to become the new ruler.
Defeated 8 or more enemy officers using Hero Skills in a single battle.
Unlocked all of the regions on the World Map.
Purified Yomi and restored the world to its original state.
Reached the maximum level with any one character.
Used a Combo Skill.
Cleared any battle in 2 minutes or less.
Saved allies 5 or more times in a single battle.
Ate 10 or more meat buns in a single battle.
Searched the barrel.
Collected 100,000 Gold or more.
Activated Musou Rush 3 times or more in a single battle.
Received the maximum level of Regard from any one character.
Won the first battle.
Earned 5000 or more EXP in a single battle.
Cleared a battle using a Special Attack.
Cleared any battle without taking any damage.
Obtained material.