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Half-Life: Opposing Force Hints

Welcome to Black Mesa

Where do I find the military radio that the scientist spoke of?
Why won't the security guard let me out of the complex?
Where can I find a weapon?
How do I get past the purple laser that blocks the stairway?

The pathway along the cliffside has been destroyed! How do I get across?
Where do I find my downed helicopter?
How do I cut the electricity that blocks my way past the downed Osprey?
I've gotten past the electrified Osprey, but now where do I go?

How do I survive the self-destructing room?
How do I get past the electrified radioactive waste in the crate-loading room?
Where do I go in the tram tunnels?
How do I get to the sewage overflow controls?
How do I reach the tram car?
How do I start up the tram car?

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