Graphics: 5/5 Although somewhat dated now, for a game that came out in 2004, these graphics are awesome. The enviroments don't look great, but hey, it's an Xbox game, not a 360 game. Still, the character models look great, and the overall experience is heightened thanks to the graphics.
Sound: 5/5 Phenomenal! Absolutely everything sounds fantastic - not a flaw here. The guns, the explosions, the vehicles, all perfect.
Control: 4.5/5 There is definitely a learning curve. The vehicles control ( to me ) very awkwardly, and the semi-auto aim gives noobs the ability to own even the best Halo players, but the control couldn't have been much better.
Fun: 4.5/5 The story sucks, so I won't bother with that, but the online play is great. A lot of players leave games for no apparent reason, though, which is frustrating, but it's a good experience - at times. Halo 2 is 80% luck. Whoever can get to the sniper first, for example, will have a huge advantage - a one to two shot kill depending on the location of the shot - and it's really annoying. So basically, if you're lucky enough to get one of the good weapons lying around, nice job, because you're likely to rape before you're shot from behind, which happens at least 75% of the time. So although Halo 2 is a good online experience, it's also a frustrating one, ultimately resulting in me giving this game a 4.5 and no higher. Everything else is great - graphics, sound, and control, but the unfair weapon advantage is annoying. At least you'll never get bored - since there are several game modes and maps to choose from. You can also start parties in which you can invite friends, and customize your character. Halo 2 should definitely be experienced by any Xbox or Xbox 360 owner. ( However be warned 360 owners, when playing on the 360, you will see in about 25% of the games you play a "fog". It's a slight masking over the map and it looks like you're playing in fog. It's very annoying and will likely result in deaths. Also, in the corner, you will see Xbox Live Sign-In, which is just as stupid. Hopefully, this will be patched up soon.