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: Infinite Health
     NumPad2: Infinite Mana
     NumPad3: Infinite Shield
     NumPad4: One Hit Kills

# Weapons 
     NumPad5: No Reload
     NumPad6: Unlimited Consumables

# Ability 
     NumPad7: Unlimited Bullet Time

# Misc 
     NumPad8: EXP Multiplier

Notes

EXP Multiplier:
While active your gained EXP is multiplied by 4. Value can be customized after trainer activation.