What about some James Bond-esque specialty items to help you in a pinch, when your life is on the line? I'd probably wind up with those insane inventions from
"Tango & Cash", like Kurt Russell's exploding bazooka boots, or Sly Stallone's shoebox lasersight on his pistol.
Realistically, I'd pack a big handgun, something hardy and simple, that will work while full of mud. It'd have to be a wheelgun, as autos would require maintenance that you may not have time to provide. Ideally, a .44 Magnum, with a nice red-dot competition sight on top. I'd probably carry something bigger, but something a little more unique (for the artistic/comic book theme) like a pump action rifle.. .357 IMI Timberwolf, perhaps? or just maybe something practical, like an HK53 with folding stock and optics. A nice backup gun would be a .22 auto (it's a backup), loaded with supersonic hollowpoints for popping heads.
Outerwear is something to consider. Although it may restrict movement, I'd probably wear biker leathers or something that's relatively bite-resistant. No good wearing flimsy chinos when you're knee deep in the bastards. I'd probably carry a small, but razor-sharp tomahawk for close-in stuff.
I'd probably remain on foot and just commandeer random cars (like Grand Theft Auto) when required.
Very, very cool thread, though.