Activating this trainer:

Press F1 at main menu.

Listen for 'Trainer Activated'.

Press desired hotkey. All hotkeys can be changed on the trainer.

Trainer Options:

NumPad1: Infinite Health

NumPad2: No Reload

NumPad3: Unlimited Ammo

NumPad4: Infinite Vehicle Health

NumPad5: Disable Ragdoll For Player

Notes:

Disable Ragdoll For Player: While active you will no longer knocked down or kicked around when hitting a vehicle.

No Reload / Unlimited Ammo: While active fire once so your stats getting updated.