Close and Personal Achievement

To perform a takedown, you’ll have to make sure you’re within range of an enemy but without being seen. You can either crouch up behind them or they can walk past you if you're hidden in tall foliage but if they to not know your whereabouts and you’re close enough, press to perform a takedown.

If done right, you’ll perform a close combat takedown and none of the other enemies around will notice as long as they can’t see you. Do this twenty-four more time to unlock.