15 for me so far.
I started using a Skorpion, but then ran out of ammo so used an M4 then the AK-47, I run through ammo like [name of something that's fast] now I got that slight of hand perk. I got 2 kills with an air strike, and a few with the helicopter. Don't know if you want to count those.
Map was Countdown (possible favourite of mine), team deathmatch ground war, finished up 32-5 or something like that. I got the final grenade challenge complete, the final Skorpion marksmen challenge complete, and ended up getting promoted.
I have noticed a nice pick up in game pace over the past day or two, people are starting to actually get down ad dirty in the fights rather than hang back with a sniper or the M60. Teamwork is still down the **** pan though.