After learning some intersting things about the zombie mode, it got me thinking, why not add an Xenomorph vs Colonial Marines Content Pack?
Xenomorphs are from the Alien Series
How it works
Colonial Marines are the Humans of this mod while the Xenomorphs are the Zombies of this Pack.
One player in the game who chooses to be an Xenomorph can kill humans with Claw weapons in which Humans respawn as humans or throw facehuggers at them which instantly kills the Human and makes them respawn as Xenomorphs.
Xenomorph Class Loadout
-Spitter that spits acid(Skeleton of Xenomorphs basically) Spits
-Crusher that takes many shots to kill but is slower than normal(Tank of Xeno's)
-Boiler that explodes(Like a Creeper)
-Normal Warrior Xenomorph(Pretty self explanatory)
-Assault:Uses M41A Pulserifle with Extra Grenades
-Medic: Uses Pulserifle with Medkit
-Heavy Assault:Uses M56 Smartgun
-Flamethrower: Uses Flamethrower
link in case you don't understand this aliens or marines crap