
Successfully complete the game to choose any level for game play.
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Play the Civilian Base 1 level. Notice the room that cannot be accessed, but is visible on the map when you examine the second large room. This room is on the northern side. Aim manually and destroy all of the lights in the mission. When this has been completed, return to the northernmost big room on the map. You can now pass through the wall when Meteor Crashing.