Use of CQC is only possible with no weapon selected, or a weapon compatible with CQC (indicated by a red CQC in the item window). * Slam - When running up to an opponent, pressing O and moving the left stick in any direction near the opponent will result in Snake slamming them into the ground. It is an instant KO, but it's loud and any nearby guards will come investigate the sound. * Throw - With an enemy in a chokehold, press O and the left stick in any direction to shove an enemy to the ground. Press SQUARE straight after to hold them up and keep them in check (obviously, in this state, they can't see your gun, so if you want to frighten them into giving up items, you will have to shoot them in the back or above their head, as aiming will not be enough); * Chokehold - Holding O