To be fair, you can take stupid amounts of damage for nothing in this game. Whoops, you moved out in the open, enjoy your headshot. Hey, you were focusing on other people trying to kill you, enjoy your instant death backstab. You rounded a corner, enjoy being on fire. Oh man, way to have a normal firefight for once, have a crit.
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http://www.youtube.com/watch?v=KOqk_q4NLLI
Not taking it.