1: Peace Lovers, we'd cover our skin in black body paint made from slurried charcoal.
2: I'd start a cult oriented around human extinction, focused on the belief that we don't belong in this hostile world and the only way to have peace is to destroy all humans, those who follow me are expected to do whatever their ability allows to further this goal and are rewarded with the promise of a peaceful death when they've outlived their usefulness. Traitors are sent out into the wild to fend for themselves, cursed to be reborn to another turbulent, painful human life when they inevitably die. Over and over again until they do their part to eradicate the species.
3: Other tribes are wiped out in the name of mercy. By wiping out civilization we're sparing humanity from the pain of birth, death, and rebirth into a world we don't belong in.
I'd bring my AR, mags, machete, camp mat, blanket, and water filter. Can't die of e-coli before our extinction or else I'll reincarnate as a future victim of my own cult. Only when there are no humans left to reproduce will the painful cycle be broken and we can all know peace.