Infinity Ward’s Call of Duty Modern Warfare 2 has been quite the success, although the game being a hit isn’t such a surprise, with the series being one of the most bankable in video games, and the multiplayer continues to ensnare millions of players around the world with its range of authentic guns, score streaks, and well crafted maps. But for a significant number of CoD players, they would prefer a greater challenge. These players, you could say, are hardcore.