Live in and fortify Costco
I'm going to die anyway, so I would travel to the tallest cliff and jump off with fireworks strapped to my back while riding a stolen ferrari while flipping off a horde of zombies.
I'm not cut out for this kind of thing. I'm not athletic, my skills are on computers, and I get pretty useless in the face of adversity. I'd probably accept the fleeting existence of human life and enjoy some last moments before offing myself.