XCOM: Enemy Unknown's aliens are vicious, terrifying creatures that take no prisoners and will leave a majority of the game's players crying, unable to progress. It's only reasonable then that Firaxis, with the XCOM: Enemy Within expansion, decided aliens weren't enough and have added the traitorous EXALT faction of humanity. If the only ones who could defeat the aliens were the humans, who are the only ones who can defeat the humans?
To sum up where the EXALT are coming from, well, they're psychopaths. The faction believes the alien invasion's promise of evolving humanity sounds like a pretty good deal and so they provide the aliens resources to get their work done. Nice guys, right? In terms of gameplay, players will collect clues as to what country EXALT's main base is located in. Finding the base will dismantle EXALT, but don't go accusing the wrong country. Also, according to the new trailer, it looks like EXALT's infiltrated XCOM...
Expect XCOM: Enemy Within to be released November 12 for $29.99 as a large expansion to XCOM: Enemy Unknown with tons of content including weapons, enemies and more.
Security Breach trailer - YouTube