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Playstation 2 - Shin Megami Tensei: Digital Devil Saga cheats

Continued game:
Finish the entire game, then watch  the ending and credits. 
After save a game. Load back a clear saved file and start a new game.
You will have all matras and combos from the previous gameplay.
The new game also lets your characters to learn the Human Form Skill 
and unlock a new SuperBoss.