How do I reach the secret mission in Starcraft 2: Wings of Liberty?
In the Media Blitz mission, in the lower right area of the map (by the mineral fields), you will see a semi-hidden path. Go to the end and destroy the Science Facility building at the end of this path. You should pick up some secret documents that will give you the secret mission. This mission must be played while you're still on the Hyperion.
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