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: Invulnerable 
     NumPad2: Unlimited Health
     NumPad3: Unlimited Oxygen
     NumPad4: Unlimited Energy
     NumPad5: Unlimited Stamina
     NumPad6: No Hunger
     NumPad7: Max Vitamins
     NumPad8: Max Protein
     NumPad9: No Thirst
     Multiply: Max Sanity
     Add: Free Craft
     Separator: Super Jump
     Subtract: Unlimited Jump
     Decimal: Low Gravity
     Divide: Freeze NPC

# Game  
     F1: Game Speed

Notes

Free Craft:
Open your journal then try to craft something simple such as Fire then start adding materials to it and free craft will be enabled.