Mmmm, Halo 3. I think it feels like it's missing something, actually... But I know I felt the exact same way about the first two games. And I know it'll blow me away once my friends complete it so we can play co-op together. Messing around in Forge and saved films is some of the most fun I've had with my 360 since I bought it. And you get to finish the fight. Finally. And what a way to end a trilogy, eh? Some people seemed to think Halo 3 got even more cheesy than the previous games, and thought it ruined it. Me, I couldn't be any happier. Story, so much, so fast... It's glorious!
In fact, I'm gonna go play right now. Practicing on Heroic so I'll be a bit more prepared for Legendary. I'm not like some people, I just don't rush it to get that achievement as fast as I can. When I beat Legendary, I wanna feel like I earned it. And considering how insane some fights were on Heroic, I get the feeling I'd end up trying to just rush past those bits on Legendary. That's not the way to do it.