EDIT for rules
A massive war zone. Unpopulated. Visibility conditions are seen below.
-Both begin about two blocks apart. Visible, but near tons of cover.
-Random encounter but both know the other individual is incredibly dangerous and needs to be eliminated.
-Sarah has an assault rifle, shotgun, pistols and 3 grenades.
-Ripley has a pulse rifle (3 explosives for the grenade launcher attachment), flamethrower attachment, handheld motion tracker device.
-Both have a handful of extra clips for their primary firearms (the assault rifle for Sarah and the pulse rifle for Ripley). The rest of the ammo is limited.
-Standard elimination rules apply.