Remember going to see Inception last summer and dreaming of playing a game where you'd fight dudes in zero gravity like Joseph Gordon-Levitt? Well, you can in Call of Duty: Modern Warfare 3! Not only that, but there's 20G on Xbox 360 or a bronze trophy on PlayStation 3 in it if you complete that section of the game taking out all of the bad guys.
Let Ray and Mike from Achievement Hunters give you some pointers on getting this achievement in the video below. I can't wait to get home and try this one out for myself.