Originally Posted by
grampagen
Corporal Hicks and Private Vasquez were able to kill a Xenomorph with a sawed-off shotgun and a semi-automatic pistol, respectively. The Aliens are very dangerous against normal people who have no idea what they're dealing with, thrust into scenarios where they're being deliberately puppeteered by interests, usually with a man on the inside of the survivor group. Otherwise they're relatively manageable.
NYC will probably be a wreck and the spin doctors will have to come up with something, but this probably isn't a huge issue for people with heatvision or impenetrable skin. The acid might possibly get a few, I'm not certain.