Enemies

Zombie Stress pits you against the Xen Zombies. Though the head crabs are their controllers below are the victims of the Xen.

	The Xen Zombie Grunt This the main cannon fodder of the Xen Dead. Once humans they have been taken over by the Xen creatures. Like all Zombies in the game, aim for the head. If your too low the head will come and get you. Though slow they are in large numbers so be warned. Try not to get surrounded.
	The Speed Xen Zombie This Zombie has had too much caffine this morning. The hyper-active Zombie will run at you and slash you. They can leap up buildings and jump across areas. Hit them hard with a secondary fire from the shotgun and they will fall down like every other enemy.
	The Poision Xen Zombie This Head crab tank will slowly move around and hurl its hitch-hikers at you over long distances. A nicely placed rocket and then a 3 shots from your shot gun will take down this brute and its free-loaders.