GameDynamo - "Enemy Unknown did so many things right, blending old with new and bringing a true classic to the modern age. The newest expansion, Enemy Within, continues this new legacy."
As imposing as a runthrough of XCOM: Enemy Unknown was (balancing battlefield duties with managing internal resources and acquiescing international allies), a second tour of duty is tougher, as repetition can turn out to be a bigger enemy than the actual aliens.
