Description: The mod XET is singleplayer and takes you on the roll of XET member Bill Freeman. XET is supposed to be the survey team mentioned late in the game and in parts of Blue-Shift. You will visit new parts of Black Mesa and old parts of it; you will, of course, also visit Xen. It will have new monsters, new weapons, and new maps. Story: Hmmmm... It wasn't always like this, humans building colonies on Xen, at first it was a lot different... It all started with the top secret government facility called Black Mesa. Those scientists then stumbled upon teleportation technology and sadly, discovered Xen. At first it all went well with the founding of the Xen Exploration Team, or XET as we know it as, but after awhile the team got a little overconfident and then started to gather specimens a little to close to the alien borders. They say that during the invasion of Earth, all of the XET members were killed in the chaos. I, Bill Freeman, former XET member and colonist of Xen was...
Almost everyone at BlackMesa knew about the
Headcrabs after the resonance cascade happened.
However, many people still fell victim to them,
including the Security Guards. Since they have
armor on, these Mawmen can take a bit more damage
unlike their scientist counterparts.