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Published on Mar 24, 2011
Throw an alien down the sinkhole in Dark Heart. This is story-related. After progressing in the 'Dark Heart' mission you will come to the shown location. Use the stealth ability and sneak past the aliens. Use the Square Button (PS3) to grab an enemy near you. Press L1 (hold it down to make the throw stronger) and aim for the dark whole on the ground.