Crysis 3 Geared Up Achievement 04/06/2016

As soon as the you resume game, you go straight up, make a right and go under the red pipe and up the stairs, kill everyone up the stairs and afterwards pick the shotgun off one of the enemies to get the last attachment and the achievement.<br />
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Don't forget to rehash and resign to your profile and also don't forget to rep me please!<br />
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Thank you so much!!!