I think under the circumstances conflict should be kept to a minimum and generally avoided. I am neither a ballistics nor a melee expert, but I think as for guns I would roll out with a Burt-like revolver, or, if I could get my hands on it, anything silenced. As for melee weapons I don't really have a side on the blunt/blade debate, but I think if I was forced to choose I would probably go with blunt, something like a hammer or a rubber mallet. I wouldn't really want to have to use a melee weapon at all because I would never want to be in that close proximity to a zomb. Gearwise I really dig j0be's wetsuit idea. And finally for the behemoths, I think unconventional weapons are definitely in order. I think rigging up some improvised explosives and crashing a building on top of them like Angel and Kahlani would probably be your best bet. But if behemoths can't swim, maybe drowning them is the best option?