Pretty good, it's not an upgrade from BF2, does have a feel that something different is being offered.
In fact I have dealt with more Ads in Anarchy Online than in BF2142. To the game itself:
Graphically, this game uses the same engine as it's predecssor. For some this will cause a few moans, and groans. For others it will give a nice sigh of relief. Like, I had stated this title does use the same engine as BF2 so if you are familar with the character models, and terrain its in here. Overall, graphically this game isn't rough at all for me to run. (An X1950XTX, really has no issues running BF2142. If it did I would have been shocked.
Audio, same fare as before, it offers the same types of audio capabilities, and my Soundblaster X-Fi eats it up.
Gameplay, if you enjoy BF2, but want a futuristic appeal you will like this. Each of the vehicles have both their own strengths, and weaknesses. The notable Walkers, are powerful, but they are not the bipedal tanks to rule all. I have found the walkers to be a bane to the ground pounders, and stand out more like a sore thumb on the battlefield. Air isn't too much of a bane in this battlefield. Light vehicles have their own ways to mess with the competition, but requires something notable, teamwork!
On foot you are are eqiuped to handle alot, but once you start upgrading you weapons, and kits you will make even vehicles fear you. An EMP grenade is a very effective tool to screw a walker, and tanks day. Melee, is more personal now since when you kill with a knife you take that enemies dogtags, and it stays in your record permanently. So its a badge of honor, and shows who really has an "A" game, and whos just is a wannabe.
Overall, this isn't worth a "9", but is nice and stable enough in my opinion to recieve an "8", just out of merit and features. MY dissipontment is that this title isn't really so much of an upgrade from BF2, but the battlefield does happen to have a significant change. nice game lets hope with future patches EA/DICE doesn't screw it up.