This page contains Halo 3 Hints for Xbox 360 called "Assembly Skull" and has been posted or updated on Mar 11, 2009 by john1. Let us know what you think of this Hint by thumbs voting.
Load up Assembly in forge mode and go into monitor mode (press up on the d-pad). There are two "arms" attatched to the centre building. In monitor mode, fly up and into the small opening at the top of the arm (it's one of the two).
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