One swivels the video camera on the armed robot until it spots a sniper on a rooftop. The machine gun pirouettes, points and fires in two rapid bursts.

一个工程师将武装机器人身上的摄像头旋转至房顶上的狙击手，机关枪开始旋转，瞄准，然后急速射击了两枪。

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Each level plays like a mini-sandbox, full of tunnels, rooftop perches, sniper posts and other myriad combinations of ways to bring the target down.

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You start and finish the challenge on a rooftop in a fixed position with a big-ass sniper rifle.

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