This Achievement is done on Mission 2 The Misconducts Stage 2(Nadja Drago)
Fight through the stage until you get to the boss fight(bounty)
Move to the far right and stand just a few feet in front of the goal , you can also stand on the upper level a few feet in front of the goal. Nadja will rush you and knock you in to the goal and the achievement will unlock. Its so easy its almost not possible to miss. I do it twice in the video from both levels to show just how easy it is.