Gearheads of War

Papi!  You got Robert to answer a good deal of the questions that I've had about the game, especially the party drops.  Now we just need to get everyone else on XBL to have their NATs open.

On a side note, I finally finished the main game on veteran, am now trying to get the Mile High Club achievement.  It is insane.  I've almost made it to the hostage pistol shot, but when I knifed the last guy, he spun in a circle, shooting as he died, and it killed me.  Sad panda.  Anyone pulled this off and have some tips?