I just got the challenge, but when i restarted my xbox after it showed i completed it, My cR disappeared. What is going on?
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[i]As the enemy forces fire upon the T-rex its attention is diverted and it begins to maul them to shreds with ease. Stomping on their vehicles, crushing spines, spitting lasers, until the last man standing has fallen.[/i] [Edited on 02.01.2011 8:53 AM PST]