Half-Life Opposing Force-The Package

Adrian Shephard discovers the mysterious Black Ops' plan for Black Mesa. He finds them in an underground parking garage, activating the thermonuclear warhead apparently with the intent of destroying the facility. Shephard kills them and deactivates the nuclear bomb, but later sees the G-Man reactivating it. Adding to the Black Ops, Shephard must face heavy artillery, a black AH-64 Apache,Race X creatures and a few Xen stragglers.