How to Level Up in Cold Blooded

"Cold Blooded" is in the second unlockable perk pack of "Call of Duty: Modern Warfare 2." When you add this perk to your character, it renders you invisible to enemy unmanned aerial vehicles, thermal vision, sentry guns and air support. It can also be leveled up to a "Pro" perk --- like all the other perks in the game --- which increases its effectiveness to preventing enemies from seeing your name or getting a red crosshair when they target you.

Instructions

1. • 1

     Create a custom class that incorporates the "Cold Blooded" perk. You will need to complete the objectives while using this perk in order to level it up.

   • 2

     Play multiplayer matches and wait for an enemy to call in a "Kill Streak Award," such as a UAV or an attack helicopter.

   • 3

     Destroy the kill streak award.

   • 4

     Destroy 40 kill streak awards while using Cold Blooded to level it to a "Pro" perk.