Map: Bootleg A triple kill, 2x double kills, a 6 man stealth bomber, ending with the mandatory throwing knife. I blow some guy up with his own claymore and his lives through it, he dropped a frag on the way out and I managed to throw it away.
After many months of this being up I just noticed between the 8-12 second mark I throw a throwing knife that tripped a bouncing betty and killed someone :P
You need to be level 70 to unlock the set of challenges this belongs to.
To unlock both challenges at the same time the easiest way is to start a team game that hosts 12 people such as team deathmatch or kill confirmed but the main thing is to have 6 enemies in total. Select a UAV or ADV UAV along with your stealth bomber, use your uav just before opening the stealth bomber screen and look for where they are spawning and just aim it in the direction they will run. If you don't see a good place to aim it then just hold out for a minute or so because the spawns change fast.