So I finally went and made an account specifically because I am continually mystified by the shambler dance, that supposedly never-fail technique which so many mappers evidently design their maps around, between how big the hitboxes on the shamblers' melee attacks are, how quickly they switch to their hitscan lightning if you actually back up far enough to avoid said hitboxes, and most importantly, how you will never find information on the "proper" way to do it thanks to every search engine result instead being about that one achievement in the Nightdive rerelease and how to most easily get it (i.e. with some other, more straight-forward cheese method like gunning the shambler down ASAP with the super nailgun and quad damage).