Using this Trainer:

Launch the trainer first, then launch the Game and then Press F1 at the Main Menu.

Listen for "Activated".

Press desired option key

Options in Promo:

Numpad 2: Super Ammo - only works every 40 seconds.

Options:

Numpad 1: No Damage

Numpad 2: Super Ammo

Numpad 3: No Reload

Numpad 4: Unlock All Chapters

Numpad 5: Invincible Weapons

Numpad 6: No HUD

Numpad 7: No Recoil

Numpad 8: Super Speed

Numpad 9: Super Jump

Numpad 0: No Vehicle Damage

Numpad *: Unlimited Laser

Numpad /: Infinite Sprint

Numpad .: Invisible

Notes:

Numpad 1: No Damage - some scripted events may still kill you.

Numpad 2: Super Ammo - press option key to give you plenty of ammo

Numpad 3: No Reload - toggle on and you won't have to reload. Also you have unlimited grenades.

Numpad 4: Unlock All Chapters - toggle on and you can enter ANY Chapter in the game, even if you have not completed the previous chapters.

Numpad 5: Invincible Weapons - some weapons (such as the bomber turret in the plane at the start of the game) can be damaged while you are using them. Use this to prevent that from happening.

Numpad 6: No HUD - turns off the HUD in the game.

Numpad 7: No Recoil - keeps many weapons more stationary when firing.

Numpad 8: Super Speed - toggle on and off to increase movement speed. Note this is NOT on when you are sprinting.

Numpad 9: Super Jump - toggle on and off to allow super high jumps.

Numpad 0: No Vehicle Damage - while in some vehicles, this option will make it so that the vehicle will not undergo damage.

Numpad *: Unlimited Laser - toggle on if you use the Laser, the battery will not decrease.

Numpad /: Infinite Sprint - toggle on and you can sprint indefinitely.

Numpad .: Invisible - toggle this on and while it is on, enemies may be able to hear you if nearby but they cannot see you.