The Black Mesa soldiers realized the mistake they were making. A group of soldiers terminated the military contract with g-man. Managing to survive in his anomalous laboratory, doctor freeman and his team initiated the unconditional process protocol to restore frontier planet Xen's dominance. The short name of this protocol code is ''U.P''. The team will return the crystal to Xen where it belongs, to take control of the Xen creatures and stop the war. - Other creatures on the planets are after the Crystal! They have to hurry! The war has to be over now! - Now you've won new enemies and new friends, Mr. freeman! Congratulations. But you have to give me the crystal back. If you give me the crystal, you can keep your clothes in exchange for your generosity. I will review your contract with my employer with the parties. This is your last chance, Mr. freeman. This is your last chance to choose.
