Without any new updates, my game wont track all of my kills. I am a gen 5 and need to get the 200 kills with arc cannon for the challenge to be complete. I have counted the kills I have done myself and at the end of the match they are not all there... This game is so f'ed up it is almost laughable.
I used to think so too, until I realized some of the "kills" I got ended up being assists. They don't count towards challenges. So you have to be careful.
a shame i can't do the challenges you guys do ..... course i/ve done 90% of the 100% challenges there are i miss doing some of them, wish ya could reset them