Activate Cheat Menu:

During the main menu screen Press: Circle, Left, Right, Circle, Up, R2.

Research Menu:

Square, Up, Down, Circle, Left, R1. Both Codes will be available through

the Options Menu.

GameShark Codes

Cargo Bay Alpha 4 Key               
8011bcf00001

Cell Block Alpha key                
8022bcea0001

Detonator                           
8011bcfa0001

Enable Items                        
8011bcbeffff

Enable weapons                      
8011bcbcffff

Engineering Alpha 3 Key             
8011bcee0001

Inf. Flame ammo                     
8011bcca0064

Inf. Flashlight                     
8011bcfc04b0

Inf. Grenade Ammo                   
8011bccc0064

Inf. Laser ammo                    
8011bcce0064

Inf. Pistol Ammo                    
8011bcc40064

Inf. Pulse ammo 
8011bcc80064

Inf. Shotgun ammo                   
8011bcc60064

Inf. Health                         
8010d6201000

Thanks to Revolution readers Vasquez and Brennan, The Great!