Belief vs. Natural Order Scale

I had a cool belief idea

Me and my weapons are one, we are unbeatable. But it is an istrument of death and killing and i will only use it for this purpose.

How would this interact with the natural order scale. Let’s say i am fighting an Owl or a Fox. I CAN’T kill this thing as a lone guardmouse or even in the patrol.

Should i pack a backup weapon to deal with animals and only use my main against stuff i really really want to kill (and that i also can).

I don’t understand. No back up weapon will let you kill larger animals (unless you have the Black Axe). Writing that Belief and then facing an animal you can’t kill sounds like a good challenge.