*initiate gloat mode*
beat it, when i came off of CHU i went to the covenenant at rally point bravo on legendary, it started with the bit where theres a scorpion and a warthog, got into the scorpion, died once trying to get to the hornets, when i got there, it took me a few deaths to win, and i will post my plan, grab a hornet and fly to the right scarab, hammer one of its legs with all your weapons until it falls, then go round the back and punish it with heavy fire, the little blue target is what your aiming for, when the back falls off shoot inside, then, when the top turret turns around, its time to fly awawy, that means its about to explode, fly off to hornet number 2 and do the same thing, but its not all that easy, never stop moving, unless you are aiming at the back of the scarab, in wich case i suggest that you move left to right, if some fast blue bullets start to hit you then its time to take your attention away from the scarab and turn it to whatever is shooting you, banshees eat missiles and heavy fire, but ghosts are fussy, they always dodge missiles, this will take a few goes but don't give up, maybe on co-op like other people said, one for each hornet, one fighting the scarabs and the other taking out banshees and ghosts...