When attacked by a gang of feral beasts only a gun would have helped. I am not so sure that that is legal in Delaware
http://en.wikipedia.org/wiki/Gun_laws_in_the_United_States_by_state#Delaware
A gun would be optimal, but do not underestimate the utility of a knife or two in that situation. Not only could you likely nail more of them, without having to justify each slash or stab, but the wounds might be more dangerous to them, less easy to repair before they bleed out.
Group rushing somebody with a knife, who knows how to use it, doesn’t work.