The longer I think about how we beat the enemies of The City the more I wonder how we end the fight with each alien species. My money is the Cabal being first. We have the least amount of information on them and their background doesn't seem to intertwine as elaborately as the Vex and Hive. Also, there are Fallen on the same planet as us, so that would be more difficult. The Cabal's empire is outside of this solar system, has an unknown situation at the moment, and would be the easiest to write off as, near if not, extinct. I also want to hear your opinions on this.
Edit: I forgot to put Taken in the poll. Also, dying out counts to this extinction poll.
Edit 2: "None of the above" counts for Taken as well now. They may seem minor now, but Oryx isn't the only one who can manipulate Taken.
[spoiler]*cough Worm Gods! *cough[/spoiler]
Edit 3: Starting to think I should have asked who would've been the 2nd enemy force to be eliminated.
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[spoiler][i]psions[/i][/spoiler]