equip your universal remote or rangefinder party crasher or even the conspiracy theory the game rewards you with for a lowly quest completion. click the left stick and hold forward until you see an enemy. pull the right trigger and get your very own FREE KILL. yayyyyyyyy!!! isnt the current meta just so wonderful? :') (for bonus 'skill' points, click the melee button after every single shotgun shot.... even if the shotgun kills them) :D