Hide Weapon
Press the "L," "R," "A," "Down" and "Left Control Stick" buttons simultaneously to hide your weapon. When other players look at you, you will not appear to be holding your weapon.
Show Coordinates
Press the "L," "R," "A," "Up" and "Left Control Stick" to toggle your coordinates position on the map. This way, other players will not be able to see your position on the game map.
Enable Pan-Cam
Press and hold the left and right control sticks, then press the "left" button on the directional pad to activate the game's pan-cam. The "Left Trigger" and "Right Trigger" buttons are used to ascend and descend the camera, while all other player controls remain intact. The pan-cam is generally used for recording game play footage, and you will lose control of the player when using the pan-cam.
Sneaking Kills
The quickest way to kill another player is by pressing the left analog stick to crouch, sneaking up behind him and pressing the "B" button to perform a melee attack. This will instantly kill the opponent.
Double Kills
If you find two opponents fighting in a closed area, you can easily deal with them both by throwing a grenade between them.