Here is the full list of all 25 Anima: Gate of Memories achievements worth 1,000 gamerscore.
Finish the game obtaining the Worst Ending.
Finish the game obtaining the Bad Ending.
Finish the game obtaining the True Ending.
Finish the game obtaining the Early Ending.
You did what?!
Progress the story to unlock this achievement.
Defeat the Secret Boss.
Find all items, weapons and artifacts.
Reach Level 20.
Finish the game in New Game+.
Obtain all Memories
Defeat Romeo Exxet.
Defeat for second time The Nameless Messenger.
Free all Prisoners.
Finish all possible conversations with Ergo.
Defeat a Memory Knight.
Obtain the Angelus.
Give the Blood Stone to its owner.
Steal from the rich, give to myself!
Open the way to the upper floors.