Killing the agent
Ok, on the level Answer The Phone, when you first have to fight the agent...jump behind him and keep smacking with your shotgun if you have one, if not, just keep punching him. Soon he'll fall off the edge. But unfortunatley, when you jump to the next building, he follows you. Another useful thing to do is use your focus and keep taping the Y button. You'll keep in an awkward way and he'll go flying of the edge. Hope this works for you!
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