There have been 6 attempts on Mickey Cantor's life. I'd say bets are off that it was a Assault, Gunner, Tank, Support, Sniper and Assassin. But who were the successful 2?
assassinated assassin, plus she's the only cold blooded one Sniper wouldn't do it because he'd be banned from mnc
I'm willing to bet it was the assassin, twice. None of the other classes seem competent enough to murder someone and get away with it outside of the combat arenas.