How do you 'grab' an enemy in this game?

#1B_D_MPosted 10/7/2011 9:57:41 PM
There's nothing in the button/controller config, but there must be a way as there's an Achievement for killing x amount of people with a grab. Is it something you have to unlock? I've snuck up on enemies totally unaware of my presence with and without a gun equipped, and there's no button prompts to grab them, nothing. Thanks very much.
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Xbox Live: Puff Braddy PSN: BraddyJ
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#2B_D_M(Topic Creator)Posted 10/7/2011 10:01:33 PM
It figures as soon as I make a topic about it I figure it out -_-
In case anyone else has trouble with it, you have to be standing, cannot be crouching, and can't have cloak/shield equipped too as it requires power to grab someone.
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Xbox Live: Puff Braddy PSN: BraddyJ
http://gamercards.exophase.com/79023.png