Activating this trainer

If not state otherwise below, press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.

Trainer Options

# Player 
     NumPad1: No Damage
     NumPad2: Invisible

# Weapons 
     NumPad3: No Reload

# Items 
     NumPad4: Unlimited Chemlight

# Enemies 
     NumPad5: Enemies Don't Attack Player

# Gameplay 
     NumPad6: Game Speed