How to Get Massive Kill Streaks on "Call of Duty: Modern Warfare 2". Part of the series: "Call of Duty" Tutorials. Getting massive kill streaks in "Call of Duty: Modern Warfare 2" is all about using the right techniques to kill enemies as quickly as possible. Get massive kill streaks on "Call of Duty: Modern Warfare 2" with help from a video games expert in this free video clip.