This page contains Iron Man Hints for Xbox 360 called ""Overkill" achievement" and has been posted or updated on Jun 15, 2008 by vhayste. Let us know what you think of this Hint by thumbs voting.
(Its easier to do this in closed areas) Kill other foot soldiers and leave one. Now charge up your unibeam and fire it. It doesn't need to be fully charged, but at least charged it for a second before releasing.
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