Utterly Mad

Any of you who are more knowledgeable about DS2 than me, Is there an item or equipment combo that lets you hit someone from across a room with your barehands while giving the broken guard stagger effect with each attack without reducing their stamina, even when they aren't blocking AND you can do all that without even looking at them? Cuz I was just walking through Heides tower of flame and some guy wearing the Havel set with a gyrm helmet did all that shit until switching to some pitchfork which he used to poison me, break all of my equipment, and reduce both stamina and health down to 0 in two hits.

There is a ring that makes your weapons invisible you get for doing a no death run, and one from a no bonfire run, that could cause him to have an invisible fume ultra greatsword.