Half Life: Chapter 17 - Interloper Walkthrough

Half Life Chapter 17 is called Interloper. In Interloper, Half Life players must traverse the alien world of Xen. Interloper is the seventeenth chapter of Half Life, and players are no longer inside of Black Mesa. Instead, Interloper takes place on Xen.
  / vg_cinema   PC Specs GPU: 2x GTX 770 SLI CPU: AMD FX-8350 8-Core 4.5GHz