It was alright.
Some parts were really lame and stupid, like the marine jumping out of the Pelican, and it was a little slow and dragged, but other parts were funny, like the FF7 spoof, and the part with Arbiter flying around. Oh yeah, I totally disagree with the narrator when he said no one wanted to play as Arbiter. I thought it was pretty cool to play as him, and his side of the story did bring a little more light to the Covenant. He kind of made you feel sympathetic for the Covenant. Hell, I felt a little guilty killing any of them during the Master Chief's campaign. Well, except for those rat-bastard Brutes, Jackals, and Drones...god I hated those guys....