I play by my own rules ... But i love a game of snipers!!! :)
Hello all! halo 2 was very challenging on CO-OP, you need to have confidence in yourself, Duel wielding is ALMOST useless,
Plasma pistol and battle rifle are the best combo, as the others have said, on the arbiter levels you need to use your allies to your advantage! give them any kind of "good" weapon you can find!
you need to have a good attitude about it, parts will be tricky, but being angry at yourself will only make it 10X worse, on the flood levels, energy sword is the only "good" weapon you can get,
NEVER pick up any skulls! they can kill you as much as the flood!
and that is all i really have as advice. i hope you Beat the covenant and i wish you luck!