All spells
At the title screen, hold R2 and press Circle, Square, Circle, Triangle, Circle, Triangle. If you entered the code correctly, the words "I gotcha" will be spoken.
Quick spell
Cast a spell, press Triangle to display the pause menu, then select the "Inventory" option. Exit the screen to resume the game with your spell being cast without a delay.
Reduce AP cost of long chains
Get a "Chain 4" or higher attack, then quickly press R2, L2 (or L2, R2) to switch to another character and then back to the original character. If done correctly, your chain number will reset to 1 without slowing your attack.
Hidden FMV sequence
Select the "Credits" option from the main menu, then press X while the credits are being displayed.
Secret Video
Select the credits and when they start to roll, press the X button for a funny video that involves one of the classic RPGs (D&D)
Infinite Chain
As you probably know, as you use chain attacks they start to use increasing amounts of AP. Well, if you get up to ''chain 4'' and above, they start to get costly (-2 AP, -3 AP each). When this happens, you can hit R2, then L2 (or vice versa) really fast to switch to another character and then back to the one you are controlling. This will reset your chain number to 1, but your character will not pause in his attack.
Quick spell casting to save your life
When you cast spells, there is an initial charge time before the spell is cast. While you wait for the charge to finish and the spell to take effect, you could be getting killed, and losing control of that summon and adding another enemy to the list.
If, during the charge animation, you go into one of the game's menus such as 'Skills' or 'Inventory', a glitch in the game cancels out any charge times and instantly casts the spell.
This comes in handy when you NEED to heal instantly. Cast heal on the person, press Triangle, click on inventory, and you hear the heal spell come out instantly. Try a barrage of fire arrows and you will kill just about any boss.
Its cheesy, and it takes advantage of a game's fluke, but if you need it enough and it means not having to reload 2 hours of gameplay, I dont feel cheap using it.
