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 4: Unlimited Items/Bullets

Options:

Numpad 1: Unlimited Health

Numpad 2: Invisible

Numpad 3: Action Cooldowns

Numpad 4: Unlimited Items/Bullets

Notes:

Numpad 1: Unlimited Health - toggle on and your group has unlimited health.

Numpad 2: Invisible - toggle on and nothing can see your group.

Numpad 3: Action Cooldowns - toggle on and your actions reset almost instantly.

Numpad 4: Unlimited Items/Bullets - toggle on and many items, weapons, bullets are unlimited.