Everything we saw in the zombies storyline was true from Kino to Tranzit to now everything that had and has to do with aliens was true for those of you that didnt know by now Infinity Ward is making a survival based mode with aliens that has never ending waves and a objected so most likely something like Mob of the Dead or Origins and what I'm thinking is that this is going to join together with the zombie storyline since we saw the aliens in Kino and the Crop circle in Tranzit and that makes me think that we are getting a new storyline that joins in with the storyline!

These are the achievements that have been leaked
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Just scroll down and read through it if you want but once you scroll down and you will see the new achievements!
The new game mode is called Extinction which sounds really amazing!
Post your thoughts and opinions on this awesome new theory! And please if you post something about this please give the credit to mp1st or me for this theory I dont know if anyone has came up with this but if so post there name!