Most suspicious deaths and acts of espionage in Skaven society are blamed on the nefarious Clan Eshin. Such accusations are probably true, but, of course, there is no evidence. Much of this devastation is wrought by the Gutter Runners, Clan Eshin's black-clad death squads. Gutter Runners have undergone training in the mysterious fighting style developed in the Far East. Because of their ability to bend and contort their pliable bodies with a speed and dexterity unachievable by man, Gutter Runners have no need for encumbering armour - they simply dodge the blows and missile of their foes. A unit is often led by a Death Runner - the term used for the most promising assassin-adept.
The slinger variant of the gutter runner sacrifices melee proficiency for longer projectile range. They should be kept in the backline in most situations, as they can only fire in the direction they are facing and when stationary, unlike the regular variant. Their fast speed does allows them to be used as skirmishers with proper micro.