Hey guys I have an upset stomach right now but anyways heres something I would like to share with you guys that used to piss me off and that was having to get 80 killstreaks to get Hardline Pro, now the way I used to do it was put on Hardline and a UAV and get 3 kills and use them but that was very slow. But this new way is so much faster and simple. I'm using it right now and I just went 53-10-24 . The key is to use Specialist Killstreak with Hardline because every first kill will equate to a Hardline kill so pretty much every time you get a kill it will count...now you can see why this is so easy right? Well just pick a gun that you can do well with (I used the PP with a Rapid fire and kick) with Sleight of Hand Pro Hardline (now Pro) and Stalker Pro with Specialist I enabled Quickdraw Pro, Blast Shield Pro, and Steady Aim. The added bonus of using specialist is that once you get the 7 kills required to get Specialist Pro you get added exp with each kill and once you get Hardline Pro and if you die and your assist gets counted as a kill you start off with the first perk you selected, also to be noted is if you capture an objective it will count as a hardline killstreak because it as well adds up to your killstreak . I played Ground War while doing this and camped the corner by the C flag where the pickup truck is and kept getting Triple and Double kills so I quickly earned my Hardline and Specialist Challenges as well. Good Luck!