Awsome multiplayer, bad singleplayer
In multiplayer, first you have to choose one of three countries to fight for in the "Neromous" War and each has thier own streangths and weaknesses. Then you must join a squad of 20 maximum people in order to play in the War, otherwise you are limited to playing free battles which are basically quick matches where you are thrown in with other people. Once you find a good squad, all matches are played with your teammates ( you can go solo if noone is around but that is no fun) in which you must strategise with eachother in order to defeat the enemy which consists of destroying all enemy mechs, or destroying the enemy base. a good team will be well balances, covering most, is not all of the role types (soldier, defender, sniper, commander, scout, and heavy gunner). in matches, you can eithr play people or a computer your choice. there is a ranking system which gives you points if you win a match and loose points if you loose a match. If you play people, they must be at least at your level or higher to make it fair. Also, you win a match, you make money, you loose a match, you loose money. you use money to buy new parts from a shop and upgrade your mech. all in all, multiplayer is a blast.
Customization is also big. there are about 20 parts online to customize your mech, and these parts can go almost anywhere you want them to as long as they fit in the allotted area and weight. On top of that, you can create your own color scheme with the given patterns and color chooser- so you can have your own color (though online squads usually have a standard squad color). Also, there is a decal maker where you can make decals with up to 16 layers with the given templates (there are a lot) where you can change the color, size orientaion etc. just about everything. then you can put that decal anywhere on the mech you want in any orientation, shape, size, etc., so customization is huge.
the graphics an the mechs are great. you can see pistons moving to move the legs, smoke comes out of weapons, the rattling generator if you get close enough to it. the mechs just look plain great. Explosions also look amazing in this game. The landscapes are usually barren unless you're in a capital area in which case you are surrounded by buildings. Sounds- nothing here is speial- you can hear every bullet/shell pistons, explosions everything, but nothing absolutely spectacular.
In the end, if you like online mech games and you have a 360, you should at least give this one a try.