Print this Unlock Codes
If you're struggling with the game then try entering the following codes during gameplay to make it easier. If the code has been entered correctly you will hear a confirmation sound.
Y, X, X, Y, B, B, Y, A, A, Y, R3
Undying (lose health but don't die):
X, A, A, X, Y, Y, X, B, B, X, R3
Faster Enemy Reflex (gain double reflex after each kill):
A, A, X, X, Y, Y, B, B, Y, Y, X, X, A, A, R3