Because a crack team of operatives finished him off! 
Ok... thats a lie. We killed one of his Sims though... from the new Mech critical mission. Lvl 100. It was well worth it to see the *CENSORED* at our feet when it was all said and done.
And then of course we had to rub it in his face... So...
I would like to thank Everyone who helped: Wixard the Healer, Depression597 the Healer/Debuffer, Austrian the Rifleman, HighAngel the MTK, Cap0ne the mini Assassin, and of course ME!
PS: Don't do it... the bastard only droped 4K! 
