I got Motion Blur done, no problem on my acct. My son was rolling through it, and the kill count has stopped at 51. He has soloed Lexington and Police Academy multiple times on hard mode to see if being out of a group would help, and it didn't. I saw on Reddit that others are having this issue. Is it being resolved? My son really wants that mask, and he has killed way more than 100 enemies to get it.