I just beat the throne room where Master Chief gets dropped off by the talking plant from Little Shop of Horrors...on Legendary. The brutes are actually pretty easy when you use dual neddlers.
Now I'm the arbiter level that follows up after it. I'm sure that I'm most of the way through the game, i just hope the rest of this game doesn't completely dissappoint.
Oh and the health system sucks now because on legendary all you need is a few seconds to be completely back to full health. I always liked kickin ass knowing my health was in the red or yellow and that I could die with just one more shot.