Activating this trainer:

Press F1 at main menu.

Listen for 'Trainer Activated'.

Press desired hotkey. All hotkeys can be changed on the trainer.

Trainer Options:

NumPad1: Infinite Health

NumPad2: No Thirst

NumPad3: Free Crafting

NumPad4: Unlimited Backpack Size

NumPad5: Super Speed

NumPad6: Unlimited Jumps

Notes:

Free Crafting: While active you can craft for free and without needing the required materials.

Unlimited Backpack Size: While active open your inventory and you have unlimited backpack size.

Unlimited Jumps: While active you can jump unlimited times. Press repeatly to 'fly' and reach higher objects.