I am playing on my PS Vita FFX HD Remaster (Italian language). I got the airship and using the Password system I managed to unlock on the first try the Murasame area through the use of "MURASAME" password. For the God Hand I had issues, guides stated the password was GODHAND but what worked was GOD HAND. Now I can't seem to find a suitable replacement for VICTORIOUS, since it's not working. Any idea?
Have you tried "VICTORIAS" instead? According to this post, some versions of the game have different passwords/spellings:
Some versions (like Italian/spanish) have different passwords than the English versions. For example, in the Italian version, the password for Rikku's weapon is VICTORIAS.