This page contains Mercury Hg: Heavy Elements Unlockables for Xbox 360 called "Achievements" and has been posted or updated on Oct 25, 2011 by PCForrest. Let us know what you think of this Unlockable by thumbs voting.
Complete one of the following achievements to collect their Xbox Live Gamerscore points:
|Unlockable:||How to Unlock:|
|Gravichallengium (10 GP)||Discover all 5 of the Challenges in the Heavy Elements content pack.|
|Gravisium (30 GP)||Finish all the Discovery Mode levels in the Heavy Elements content pack.|
|Heavybonusium (10 GP)||Discover all 10 of the Bonus Levels in the Heavy Elements content pack.|
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