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
NumPad6: Super Speed
NumPad7: Unlimited Items
NumPad9: EXP Multiplier

Trainer Options
# Player 
     NumPad1: Infinite Health
     NumPad2: Infinite Mana
     NumPad3: Super Damage
     NumPad4: Change Gold
     NumPad5: Change Crystals

# Misc 
     NumPad6: Super Speed
     NumPad7: Unlimited Items
     NumPad8: Refresh Shop Items
     NumPad9: EXP Multiplier

Editor Options
# Player 
     Gold
     Crystals
     Level
     EXP
     Attribute Points
     Skill Points
     Strength
     Agility
     Vitality
     Power

Notes
Unlimited Items:
While active items won't get removed from storage

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