To use this cheat, you must have your melee ability as your A button. When using the shotgun, after firing, simply hit the melee button and continue to shoot. With the melee, you will cancel out the shotgun's reload and will be able to fire twice as fast as any other person whom is using the shotgun.
There are 6 concept art galleries to unlock by collecting the corresponding amount of Trust Data Disks and scanning them using the ASE. These conspiracy disks can be found scattered on certain missions.
Enter the following codes at the 'Cheat' menu to unlock the Custom ASE and Secret Agent skin. These codes originally came with the 'Conduit Special Edition' but will also work with the normal version of the game.