Difficulty : Medium Recorded : 17/12/11 Part 1 of 4 Half-Life: Blue Shift Developer: Gearbox Software Released: Sierra Entertainment 2001 Plot As with Gearbox's previous expansion pack Opposing Force, Blue Shift returns to the setting and events of the original game, but portrays the story through the eyes of another person. The protagonist in Blue Shift is a security guard, Barney Calhoun, employed by the Black Mesa Research Facility. After a scientific mishap causes Black Mesa to be invaded by aliens, Calhoun must fight his way to safety.
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