I think the game is overrated. It was more of the same. No innovation. Here are some things I liked and didn't like.
+ Better graphics than Halo 1. They're gorgeous.
+ Smoother improved controls both for your player and driving vehicles.
+ Awesome soundtrack except for the crappy bands.
+ Great voice acting.
+ Master Chief can jump higher
- No online or system link co-op play. I can understand not being able to do it online but no system link co-op? Lame.
- Split screen gaming still sucks.
- Multiplayer maps are too big. Unless you're playing with more than 8 people, it takes forever to find people.
- No running why? I think it would improve the flow and speed of the game.
- Why do I have to drop a weapon(instead of putting it away) to throw gernades when I'm wielding dual-weapons? Lame.
- Convulated story.
- Lame ending.