Woh thanks for the tips. I been actually doing really good with ICR in core. Can't use it as a rushing assault rifle really. I use it more like it's BO2 counterpart, the M27, and engage at medium ranges. I already have 78/100 headshots and trying to get the 22 more really soon. But I'm defenitely gonna start them launcher challenges now since I see more and more people using UAV/CUAV/whatever and not the required streaks.