Really straightforward achievement. You need to complete all 3 missions that comes with the Corporate Warfare DLC. None of them are extremely challenging, although I did have one or two problems with the second and last missions.
I noticed that the videos that conmacca posted weren't viewable to me, so here are video walkthroughs of each mission in order that aren't private (Credit goes to YouTube user "FarewellStudios" for the first video, and YouTube user "streetfreak13" for the last two):