Is there a video of it by chance? Might actually hop on tonight and finish it. Think this is it -
http://www.youtube.com/watch?v=x4V4AWP9j4U
Thanks btw!
Yep, that's the video. Protips for the rest of the level:
-Once you make it to the "first" encounter, just dispatch all the enemies like normal. There are a bunch of weapons still stockpiled on your Pelican, so weapon-juggle if you feel like going in over-armed.
-The only major hurdle in the first encounter is the Hunters at the end of the grav lift. If you explore a little bit, though, there's an Incineration Cannon hidden on one of the platforms; it's near the Terminal and should have a mancannon that sends you straight to the Hunter platform, if I'm remembering right.
-Once you get to the second area with the "void" underneath, distract / kill the gold Elite running for the Banshee and steal it. Fly low (not too low or you'll hit the death barrier, just get a little ways under / adjacent to the bridges) and go all the way to the bottom door at the end of the major encounter. If you're careful, you can land right next to the door without getting shot to pieces by the turrets / Jackals. As soon as the door opens, jetpack as high as you can and
hold forward. It might seem pointless, but as soon as you're above the door, the Covenant outside won't be able to shoot you to death despite being inches from the end of the level. If you go forward in midair the door will be far enough away to shut and then save you.
As a general tip, try and spam the hell out of the Suppressor and the Light Rifle. Even on Legendary, the Suppressor eats through Promethean shields like they're nothing, presumably as a balancing measure. In some of the locations where Covenant weaponry is scarce (beginning of Infinity, etc.) the Suppressor is commonplace so it's ridiculously helpful. The Light Rifle scoped in, by extension, has such a high damage yield (even pre-Turbo, which Campaign still utilizes) it can make short work of most shielded enemies. If I'm remembering right, scoped-in LR 6-shots high-ranking Elites; the green-armored ones, bare minimum.
I've only done Legendary runs a few times, but the one thing that gives me the most trouble is the Knight Battlewagon in the "Portal Hub" on Midnight. That is, the very last time you're in that room, a Knight armed with an Incineration Cannon camps right in front of the final portal. I think the only way I got around it solo was by using Hologram to distract it and then making a blind charge at it with the Suppressor. Other than that, you can just hoard Sticky Det / Shotgun in Composer and turtle / camp with Promethean heavy weapons, the Scattershot, and hardlight shield / autosentry in Midnight's final composer portion.