Is it worth buying?
I got hooked on Halo & pre-ordered 2, 3 & Reach, is this game worth buying? From what I've heard, it's the worst game of the franchise but how bad is it compared to Halo 2, which, in terms of my personal expectations, is one of the worst games ever played. But Halo: CE, Halo 3 & Reach were among the best games I've ever played.
And I don't really care about the multiplayer, how is the actual campaign in terms of gameplay & storyline?