Plus Chris you didn't give the exact location of the weapons in Memoria I did.
Quote Originally Posted by Ace14
The weapons in Memoria-
Amarant- Before reaching the big eye go on the side to find the weapon.
Eiko- When you see Alexandria Castle get destroyed go up towards it and go to the left to find the weapon.
Vivi- When climbing up the ladder to Lich, the platform you can stand on before climbing search the corners to find the weapon
About Eiko's I think you just press X near the tiny Alexandria Castle.