Activating this trainer:
Press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.
Numpad 1: Unlimited Health
Numpad 2: Quick Weapon Coolodown
Numpad 3: Unlimited Jumps
Numpad 4: Easy Craft
Numpad 5: Unlimited Use Items
Numpad 1: Unlimited Health - toggle on and most things cannot harm you. You must wait until something has damaged you before you toggle this on.
Numpad 2: Quick Weapon Coolodown - toggle on and most weapons can be fired at will, even when they overheat. Fire a weapon first and then use.
Numpad 3: Unlimited Jumps - toggle on and you can jump up as many times as you like. Jump once before you toggle on.
Numpad 4: Easy Craft - you must enter a crafting station, then toggle this on. You can craft anything.
Numpad 5: Unlimited Use Items - you must have used at least one item. Toggle on and then when you place or use items, most items the count will not decrease.
Unlock more trainer options including updates from here - Dig or Die Trainer