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 1: Add XP Points - (1 point)

Options:

Numpad 1: Add XP Points

Numpad 2: Add Skill Points

Numpad 3: Add Attribute Points

Numpad 4: Add Weapon Points

Numpad 5: Add Money

Numpad 6: Invincible

Numpad 7: Easy Kills

Numpad 8: Invincible Horse