This page contains Halo 2 Unlockables for Xbox called "Unlock Levels" and has been posted or updated on Oct 16, 2006 by Real Halo2 Player. Let us know what you think of this Unlockable by thumbs voting.
You can unlock the foundation MP map by finishing campaign mode on easy. there are also two other maps to unlock: Marathon and Conclusion. Try finishing harder campaign modes to unlock these levels.
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