Look alive soldier! And stay that way!

There's been an "incident" at a government lab, some God-forsaken place called Black Mesa. It is imperative to National Security that no one learns what has happened there.

You and your squad must infiltrate the lab, eliminate the hostiles, neutralize all resistance and secure the facility. This is no cakewalk. You'll have to rely on your training and trust your fellow soldiers if you want to survive this mission. No one knows what you'll find there, but expect the worst.

So pack your gear, the chopper leaves in 15 minutes.