The universes of Sci Fi and Fantasy are collapsing into each other, forcing an all out battle between the women of the two genres (why not?) for survival.
Battle take place, as all apocalyptic battles must, in Times Square. There are abandoned cars but no people.
To keep things from getting too out of hand I'm limiting this fight to TV heroines only. All equipment is standard for what appeared on the respective shows unless otherwise noted.
Special Agent Olivia Dunham from Fringe (full complement of Cortexiphan powers).
Sarah Conner and Cameron from Terminator: The Sarah Connor Chronicles. Sarah gets a loaded shotgun and pistol with two spare magazines. Cameron gets no starting weapons.
Kira Nerys from DS9 (with Bajoran phaser).
Sydney Bristow from Alias.
Zoebot from Caprica.
Nina and Kat from Alphas.
Buffy and Faith from Buffy (Angel appearances count for Faith). Each with two stakes.
Xena and Callisto from Xena: Warrior Princess (human form).
Khalessi Daenerys Targaryan (with dragons) and Brienne of Tarth from Game of Thrones.
Avatar Korra, assuming she blinks in somewhere after the pro-bending finale but before her final fight with Amon.
Winning team gets the continued existence of their universe.