A great game. However,it's over-rated.
Graphics
Halo graphics are... good, and bad. The graphics in the landscapes and environments are nice... but nothing more than average. Some of the environments are pretty cool, and most are just normal.
Sound
There's some cool music and stuff in halo. It sounds nice. Not the best, but pretty good for a regular old FPS shooter.The sound effects are okay. You know, guns sound like guns. The voice,though, is another story. The voice of the people is nice. They're actually voice acted pretty well, which is surprising for a videogame.The alien voices are totally crap, and really lower the sound score for this game.
Gameplay
The single player mode is decent. It’s not phenomenal,but it is definitely good. The guns are fun to shoot, the vehicles are fun to drive, and the graphics make you feel like you are really there. The game really succeeds in making you feel like a part of the environment. The AI is severely lacking though, which is surprising considering how much some reviewers have droned on and on about how the game isn’t really about one man versus an army, but one man as part of a team versus an army. Your AI-controlled squad mates are just as likely to run under the wheels of your buggy or stand there and get torn to pieces as they are to help you. Usually when they do try to help you, they simply run straight forward and shoot blindly until either they or their opponent is dead.After playing through the single player game,you'll probably never want to play through it again,unless you're a big fan of FPS single player campaigns. There isn't really anything that drives you to try again or to play on a higher difficulty.
In Conclusion...
In conclusion, Halo is a boring, old FPS with nothing special or cool about it. There is a countless number of FPS games out on the market, and Halo falls right in the middle of the batch, with nothing setting it apart from any of the others. There are a few really great FPS games, there are a few really horrible ones,and Halo is right in the middle.