The killers' weapon of choice, in Halloween, remained relatively focused - a large knife. Conrich [ed.] (2010) Horror Zone. C9, p.177.Horror Zone - Amazon book
We used the film Halloween to help us decided on what weapon of choice to use. We believe that this is one of the best slasher films around. The knife is used in most horror/slasher films, we gathered this from analysing deconstructing films.