I'm not counting assists. I subtract the assists and get my kill number. Also, I can hit the button on my controller during game play and it will tell me my kills, assists and deaths. Now guess what Today is April 11th, 2018. The Challenge is "To The Last Man" Defeat 10 enemies in Galactic Assault. I played 3 matches of Galactic Assault. 1st match I got 3 kills. 2nd match 0 kills. 3rd match 5 kills. When I exited Galactic Assault and went to Timed Challenges it read 3 kills. 3+5=8 so where are my other 5 kills. I checked the kills during the game to make sure. I had a 3 kill streak died then I got 1 kill then died then I got another kill. That's 5 kills. I get lots of assists but my kills should not be unregistered. What's the point of a Challenge if you can't complete it? Oh, if you look at Eliminations then subtract your Assists then you get your Kills. Knowing this doesn't change the fact that the game isn't registering kills on a regular basis.