Yes, part 1 was always two people recommended.
Anyway, having finally got in game to play this one (Nothing to do with the game for once, my graphics card died and the replacement arrived today), I can't help but love Cyberlord's voice. He sounds almost exactly like Lugnut from Transformers Animated, which is awesome. So much so that I was actually expecting him to use the aforementioned character's trademark Punch Of Kill Everything at some point in the fight. Was kinda disappointed when he didn't.