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.