Kill a person in close range.
Stun the first person that sees you in his sight for 2s. Stunned person will not shoot, move or call for help.
Hypnotyse a person in close range from behind to make him rage and stay in charging-shooting mode until hitting a wall.
Broadcast a hypnotizing sound through the mic, and confuse every enemy in the level. They will ignore you for 5 seconds.
If you are in the enemy's checking area, even it's a small body portion, you will be detected. If the pendulum is also in their sights, they would be stunned.
If the enemy is in the camera, their sight will be a 70 degree angle of infinite length.
If the enemy is not in the camera, they will still be moving, but will not be able to detect the player.