Level select
 
 At the "Press Start" screen, press R2, Triangle, Left, Circle, Square, 
 L2, Left, Up, X, Down, L2, Square. If you entered the code correctly, 
 the screen will flash.
 
 
 
 Invincibility
 
 At the "Press Start" screen, press Right, X, R1, Triangle, Up, L2, 
 X, Left, L1, Circle, X, R2. If you entered the code correctly, the 
 screen will flash.
 
 
 
 All weapons
 
 At the "Press Start" screen, press Up, Down, X, Square, R1, Triangle(2), 
 Left, Circle, L1(2), Right. If you entered the code correctly, the 
 screen will flash.  
 
 
 Full bolt
 
 At the "Press Start" screen, press Left, Right, Up, Down, L1, Circle, 
 Triangle, R2, Left, Down, Square(2). If you entered the code correctly, 
 the screen will flash.
 
 
 
 Full spread
 
 At the "Press Start" screen, press L2, R1, Circle, L2, Down, Up, 
 L1, Right, Left, X. If you entered the code correctly, the screen 
 will flash.
 
 
 
 Full homing
 
 At the "Press Start" screen, press Right, Up, Square, L1, Left(2), 
 L1, Left, Circle, Left. If you entered the code correctly, the screen 
 will flash.
 
 
 
 Full beam
 
 At the "Press Start" screen, press Left, Circle, Triangle, Right, 
 L1, Square, Left, R1(2), Triangle. If you entered the code correctly, 
 the screen will flash.
 
 
 
 Full area effect
 
 At the "Press Start" screen, press Left, X, Triangle, Up, X, Down, 
 Square, L2, Left, R2. If you entered the code correctly, the screen 
 will flash.
 
 
 
 No power-ups
 
 At the "Press Start" screen, press Down, Up, X, Square, Down, Up, 
 X, Square, L1, L2, Square, Circle. If you entered the code correctly, 
 the screen will flash.
 
 
 
 Boss mode
 
 At the "Press Start" screen, press R1, Triangle, Down(2), X, L2, 
 Left, Square, Right, Triangle, R2, L1. If you entered the code correctly, 
 the screen will flash.
 
 
 
 Training missions
 
 At the "Press Start" screen, press Square, Up, L2, Left, Triangle, 
 X, R2, Circle, Right, R1, Square, Circle. If you entered the code 
 correctly, the screen will flash.
 
 
 
 Agent data
 
 At the "Press Start" screen, press Up, Down, Circle, R2, Left, L2, 
 Right, X, R2, Square, Up, R1. If you entered the code correctly, 
 the screen will flash.
 
 
 
 Alien data
 
 At the "Press Start" screen, press Square, L1, Circle, L2, Down, 
 Triangle, R1, Right, X, Left, R2, Triangle. If you entered the code 
 correctly, the screen will flash.
 
 
 
 "Making Of" feature
 
 At the "Press Start" screen, press Circle, R2, L2, Circle, Triangle, 
 Down, Square, X, Right, L1, X, Up. If you entered the code correctly, 
 the screen will flash.
 
 
 
 Backflip
 
 Press Square + Down.
 
 
 Somersault
 
 Press Forward + Square.
 
 
 Better guns
 
 Get better guns by using Agent K.
 
 
 Faster speed
 
 If you want to be faster, use Agent J.
 
 
 Defeating Bosses
 
 When fighting the Bosses, it is just as easy to use your pistols 
 than any other gun.
 
 
 
 Game Shark Codez: 
 
 Master Code (Must Be On):
 0E3C7DF2 1853E59E
 EE8EFE7ABC BCDDBA
 
 Infinite Health:
 CE70D90C BCA9DD4B
 
 Infinite Lives:
 CE70D97A BCA99C8C
 
 Infinite Xeno Bombs:
 CE70D922 BCA99C8C
 
 High Score:
 DE70D936 1C9E7B82
 
 Unlock Level 2:
 CE5D49C0 BCA99C84
 
 Unlock Level 3:
 CE5D49CC BCA99C84
 
 Unlock Level 4:
 CE5D49C8 BCA99C84
 
 Unlock Level 5:
 CE5D49D4 BCA99C84
 
 Unlock Boss Modes:
 DE5D49D2 BDAA9C84
 
 Unlock CST:
 DE5D493E BDAA9C84
 DE5D493A BDAA9C84
 
 Unlock Agent Data:
 CE5D49DE BCA99C84
 
 Unlock Alien Data:
 CE5D49D8 BCA99C84
 DE5D49DA BDAA9C84
 DE5D49E6 BDAA9C84
 DE5D49E2 BDAA9C84
 DE5D49EE BDAA9C84
 DE5D49EA BDAA9C84
 DE5D49F6 BDAA9C84
 CE5D49F0 BCA99C84
 FE5D49F2 BCA99B84
 
 Unlock Making Of:
 FE5D49FD BCA99B84
 DE5D48FE BDAA9C84
 DE5D48FA BDAA9C84
 DE5D4886 BDAA9C84
 DE5D4882 BDAA9C84
 DE5D488E BDAA9C84
 DE5D488A BDAA9C84
 DE5D4896 BDAA9C84
 DE5D4892 BDAA9C84
 CE5D489E BCA99C84