Spider

Overview
"Spiders are believed to be a mutation caused by the infected host being exceptionally flexible and dexterous. The mutant has two extra pairs of arms along it's waist and appears to constantly be on it's back. While this should normally inhibit ones movement directly; so many limbs coupled with high dexterity make this creature extremely fast. Worse yet; it is very fast. Survivors must be quick on their feet to avoid a nasty fate."