Gundams, because they have infinite amounts of energy with their GN Drives, unless they use Trans-Am(It'll be OVER! after using it). And gundams are much larger than knightmares...
ok 2 words........ ZERG RUSH (except with knightmares dosent even have to be 9th gen)
cause no matter what you cant kill all of them. also larger= larger target lets see it try to survive a FLEJA blast.
But Zerg Rush is a terrible tactic that is only effective against n00b players (such as myself).
And yes, you can kill all of them.
BTW, WTH with this Thread Necromancy!?!