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: Unlimited Health

# Weapons 
     NumPad2: Unlimited Ammo
     NumPad3: No Reload

# Progression 
     NumPad4: Mega XP

# Currency 
     NumPad5: Sell Item Mega Credits

# Gameplay 
     NumPad6: Game Speed

Notes

Unlimited Health:
This is not GOD MODE.  Land mines, and getting shot point blank by large vehicles will insta-kill you as those deaths are scripted.  Mostly useful against small arms fire and melee damage.

Mega XP:
Toggle on then go buy whatever skill you want.  This simulates you having the XP to do it.

Sell Item Mega Credits:
Toggle on and sell an item then toggle back off.