This page contains Lego Batman Unlockables for Nintendo Wii called "Arkham bonus level" and has been posted or updated on Sep 30, 2008 by Evicerator. Let us know what you think of this Unlockable by thumbs voting.
Arkham bonus level
Get a "True Villain" rank on all levels in the Villain storyline. To reach the mission, go to right of the Batcomputer. Go down the ramp and pull the lever to get to the villains. Go through the door on the right and look in the corner to reach the memorabilia room. Climb the ladder at the top to access the Arkham level.
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