You should have taken Swords on Lonewolves, or Juggarnaut out of the equation as well. I've actually gotten a Killtrocity in Team Doubles. It was Team Snipers on Vessel and the other team wasn't moving, but getting a KILLTROCITY in a 2v2 is pretty bad ass.
Oh and I have gotten a Killionaire in Rocket Race, because one team always spawns in the same spot, so I just spawn camped on them and got 10 quick assassinations.
[Edited on 07.17.2011 8:22 AM PDT]