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:

Numpad 1: Unlimited Health

Numpad 2: Super Damage / No Monsters

Numpad 3: Unlimited Sprint

Numpad 4: Unlimited Melee Attacks

Numpad 5: Unlimited Ammo

Numpad 6: No Reload

Numpad 7: Unlimited Grenades/Flares/Items

Numpad 8: Instant Use Items Cooldown

Numpad 9: Fast Level Up Weapons

Numpad 0: Unlimited Skillpoints

Notes:

Numpad 1: Unlimited Health - while in the game, toggle on and most things cannot harm you.

Numpad 2: Super Damage / No Monsters - if left on, monsters will not spawn. This is helpful if you are wanting to explore or do not want to be bogged down with attacks. Otherwise, the option is best left OFF, but turned on for massive waves of attackers or to kill high health boss like monsters.

Numpad 3: Unlimited Sprint - toggle on and you can sprint indefinitely.

Numpad 4: Unlimited Melee Attacks - toggle on and you can melee attack nearby monsters indefinitely.

Numpad 5: Unlimited Ammo - toggle on and most weapons have unlimited ammo when you reload.

Numpad 6: No Reload - toggle on and most weapons can be fired without stopping.

Numpad 7: Unlimited Grenades/Flares/Items - toggle on and if you have an item such as a grenade and use it, then the amount you have won't decrease.

Numpad 8: Instant Use Items Cooldown - when you use items such as a grenade, the item can be used again more quickly.

Numpad 9: Fast Level Up Weapons - toggle this on and when you shoot enemies, the level up of that weapon will occur more quickly.

Numpad 0: Unlimited Skillpoints - toggle on and if you have skillpoints to spend, when you spend them the amount will not decrease.