During game play pause the game by pressing 'Start' and enter the following codes to unlock the corresponding effect. If these codes have been enetered correctly you'll see a green flash as confirmation. The code takes effect when you unpause the game.

Unlock ALL Items, Gadgets and Tech Points:
X, White, Y, Black, Y

Invulnerability Toggle:
X, White, Y, Black, D-pad Left

Win Current Level:
X, White, Y, Black, X