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!
The kill count for PP trials only tracks per single playthrough (if you start a new campaign, it resets to zero). Whereas your general Zombie kill count (tracked for purposes of the achievements) does not reset. That's my story and I'm sticking to it.
Actually, the kill count for PP Trials doesn't reset. I was confused too when I was trying to complete all of them. The kill count PP Trials are completed one after the other. The next one is not even visable until the current one is completed. I kind of
got into an argument with other people on this forum over the exact same Trial. After you complete the 72,000 kill Trial, a 200,000 kill Trial will be unlocked. In order to complete all of them you will need over 341,000 kills. The best way to do it is to
use the Turret Rig and repeatedly go back to the part of the highway near the diner. It gets to be mind-numbingly repetative, but I used the snap function to watch TV and switch between music channels.