The only complaint I had about the Flood in the last game was that they were often too hard to distinguish from your allies, especially in dark corridors. I found the pistols in the last game were pretty cool of you went for the head shots, but a little tricky to use.
I presume since they upgraged the sniper rifle, that that mans they upgraded the beam rifle as well?
Sometimes, depending on your difficulty level. On Legendary, unless you had an indestructible team leader (i.e. someone who was part of next story sequence) then most of your team mates would get nuked. They didn't bother to upgrade their abilities in proportion to the difficulty level.
Too bad too, cause a large part of what I enjoyed about the campaign versions were the banter from your team mates. Plus, it hurt me every time Angie Martinez got killed.
but when u come to think about it on legend difficulty some of ur marines hanged on for quit along time ( thats if ur there to help them and not leave them on there own) oh and by the way in halo 3 i think not very sure but i think the marines are more better at aiming so we should have no problem on killing the flood
the best thing i though of halo 2 was when u could play as the arbitar but the thing i realy realy hated was ur invinsibilty cloak did not last as long as ur team m8s and the worste thing was that ur team m8s die to quick against the flood
the best gun i like is the shot gun it a quick lock and load then bang 1 flood down then loack and load thats quick