Unlimited health
Press start and hold L1, R1, press Square, Circle, Circle, Triangle, X, Triangle, Square, Left, Right, Up, X

Private rank
From the Title Screen, press Square, Circle, Triangle, then start a new game.

Lieutenant rank
From the Title Screen, press R1, L2, L1, R2, then start a new game.

Colonel rank
From the Title Screen, press Triangle, Square, Circle, Square, Triangle, Circle, then start a new game.

Master of X-Squad rank
From the Title Screen, press Circle(4), Triangle, Square(4), then start a new game

Start with 10000 points
At start menu press triangle,circle,square.

General rank
From the Title Screen, press L1(2), L2(2), R1(2), R2(2), then start a new game.

All Weapons With 99 Clips Of Ammo
Enter at the main Menu: Circle, Circle, Circle, Circle, Triangle, Square, Square, Square, Square.

Major rank
From the Title Screen, press L2, Square,R2, Triangle, L1, Circle, R1, then start a new game.

Sergeant rank
From the Title Screen, press Triangle, Circle, Square, then start a new game.

Captain rank
From the Title Screen, press Circle, R1, Circle, L1, Triangle, R2, then start a new game.

All weapons
During any mission hold select and start and quickly press X, X, Circle, X, Left, Down, Square.

Easy kill
Shoot in the head or testicals

Upgrad
On last level in the corner there are plasma grenade launcher