This is way easier than you may think. You only need the CGM 25 and the Flare Supply. When the Mission starts call the Supply drop via Flare, when the Ammunition is arrived immediately call a new one in. Start shooting Sahelanthropus without using the logon option, dodging shouldn’t be too hard and the fight is over after four minutes. And Rember: if your are running, you don't regenerate health
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