We're excited to announce that we've fully migrated the Xbox Forums to their new home, here on the Microsoft Community forums!
As of today, going to forums.xbox.com will redirect you here to the Xbox area of the Community forums. We've moved all of your existing threads over so you can continue and start conversations with the new forums experience.
We sincerely appreciate the feedback you have provided over this transition and can't wait for you to check out the new Xbox Forums!
Is that 100% ?? Cause I also found this.. There's a total of 16 Survival maps you'll need to play here. To make it a little easier, these are best done with one other player. You may also want to note that not all of the maps are available from the start.
Some require you to be a certain level within the Survival mode. By simply playing the other maps, you should have no trouble reaching these ranks. All you need to do is reach the 15th wave for it to count, there is no need to complete it.