just found this on another page by ambalabamba
New boosting method for 'Fire Controller' achievement
(Searched and didn't find anything, so sorry if this has already been posted. Please delete if so.)
So me and several others finally got this achievement tonight by boosting a separate way than described here on the forum, this method involves no kills just capturing flags.
Start up a game of sector control and make sure you have 6 or more people in the game lobby so it starts straight away. One team of 3 (or however many you have on one team) should go to capture a flag (for instance Charlie). Once captured the team should move away, team 2 should then step forward and capture the same flag. Rinse and repeat and you should all get 600 points at the same time.
No killing involved!
get 6 of us and lets go for it.