I'm working on my last two sniper rifles to get diamond camo. I need a few more bloodthirsties to be able to get the 3rd one gold. I was playing Dom on Standoff and had 3 kills before half time then got 3 more in the 2nd half. I got the bloodthirsty medal but didn't it show on my camo challenge. I went back into theater mode to make sure all my kills came from the rifle and they did. The only thing I can think is that the camo challenge has a glitch where it doesn't count if some kills were before halftime and others after. I am fairly positive that this happened last week too on another weapon but I assumed I miscounted. Now, I'm inclined to think it's just a glitch. Anyone else have this happen? Not the end of the world but a little frustrating.