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: Unlimited Ammo

Options:

Numpad 1: Unlimited Health

Numpad 2: Unlimited Ammo

Numpad 3: No Reload

Numpad 4: unlimited Grenades

Notes:

Numpad 1: Unlimited Health - toggle on to be invincible to most attacks.

Numpad 2: Unlimited Ammo - toggle on and your ammo is unlimited.

Numpad 3: No Reload - toggle on and when you fire the weapon you don't need to reload.

Numpad 4: unlimited Grenades - toggle on and you have unlimited supply of grenades