Pretty cool, and a lot of effort obviously went into this. Having a squad roll with you, new enemy types to shoot at and new guns to shoot at them with in the trusty Half-Life gameplay makes for a grand time. The final boss manages to be more lame than base Half-Life's, but that's a small blemish on an otherwise great game. Now how the fuck did Blue Shift come out 3 years later with like, 10% of the effort of Opposing Force...!