Here is the full list of all 25 Anima: Gate of Memories achievements worth 1,000 gamerscore.
Sometimes the plan is foiled before it starts.
A hollow victory...
Unleash the ultimate monster in the world.
Stop Baal. Close the door.
Defeat the Memory of The Calamity.
Reach Level 20.
Obtain the Angelus.
Defeat Romeo Exxet.
Defeat for second time The Nameless Messenger.
Defeat Malekith, the Lord of Nightmares.
Defeat Druaga.
Obtain all Memories
Free all Prisoners.
Give the Blood Stone to its owner.
Finish all possible conversations with Ergo.
Steal from the rich, give to myself!
Open the way to the upper floors.
Defeat Jonathan Kappel.
Defeat The Nameless Messenger for first time.
Defeat Nascal the Puppetmaster.
Reach Arcane.
Defeat a Memory Knight.
You did what?!
Find all items, weapons and artifacts.
Finish the game in New Game+.