Campaign completed on Legendary :D
Took about total of 20+ hours to finish (considering that I didn't know anything about the campaign, so it's almost always a surprise at every corner).
Overall, pretty cool stuff, difficulty's just about nice, though the fuel rod cannon turrets are just wtf. I love the new BR, it's so awesome, the only downside is that Bungie recognized its awesomeness and hence didn't give much ammo for it. And Ultra (the white ones) elites are EVERYWHERE on Legendary, which makes it awesome, since their armor is so cool.
However, I think the city mission (after the blowuptheCoviemothership mission) looked a little funky