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.

Promo Options
NumPad2: Unlimited Ammo

Trainer Options
# Player 
     NumPad1: God Mode

# Ammunition 
     NumPad2: Unlimited Ammo
     NumPad3: No Reload

# Visibility 
     NumPad4: Stealth Mode
     NumPad5: Invisible To Cameras
     NumPad9: Invisible / Disable AI

# Accuracy 
     NumPad6: No Recoil
     NumPad7: Focused Aim

# Enemies 
     NumPad8: Super Damage

# Items 
     Multiply: Unlimited Items Use

# Sniper Assassin 
     Add: Freeze Sniper Assassin Mission Timer
     Subtract: Unlimited Precision Scope Mode
     Decimal: Fast Sniper Rifle Shots
     Divide: No Sniper Rifle Recoil

# Gameplay 
     F1: Game Speed

Notes
Unlimited Ammo:
Toggle on and you have plenty of ammo when reloading.