I thought i'd try and make a small review for people who might be interested in this game. If you are a Tekken fan, then you will more than likely find ways to like this game. I haven't played around with any of the new characters yet, but a couple seem to be used by quite a few people online. I'm not very good at this so to just try and break it down
Scenario campaign seems to be the center of the game almost, it's where all the story plot is driven and where you unlock items, get most achievements (if anyone cares) and earn most money. I believe you can play this co-op? But i have not done so, yet. The game type i think, shouldn't be taken seriously. The game play is okay, but could have been alot better. It feels it hasn't really improved much from The devil within from Tekken 5. You can lock on to enemies which can sometimes be useful. But anyway, i wouldn't get too excited about this and i'm still yet to complete it.
The D-pad on the 360 controller for me, is hard to use. Doing diagonal moves/attacks seems hard to pull off and in general dosen't seem that responsive. You can get your way around it and get use to it, but it aquires more concentration, aha. So i guess what i'm saying, if you care or want a decent controller/d-pad, you might want to buy some mad catz one or something, if you don't have one already.
Arcade is fine, good old usual Tekken. You get to face nancy, some huge hardcore robot machine which is in a bonus round, it's good fun to try the challenge. Then which most people seem to dislike, including myself is the Final stage, where you face off against some god like egyptian thing that takes up nearly half the screen named Azazel. This thing took me over 15 continues to take out first time round. Maybe i'm bad or it is just generally hard. It's not the difficulty that i am exactly bothered by But the character/design itself. What were they thinking? It's just over the top and spoils it for me. However, no one should really say the game is bad because of this one thing. So i'll stop the bitching.
I'll just finish off with online. This has been the most fun i've had on Xbox live in a while. I don't know if this game will remain popular enough to find a game easily in the next couple of months with other game releases coming out. But i haven't really had many troubles joining a game. One thing people may get annoyed by is sometimes the connection, as it basiclly goes slow motion Tekken and the framerate just seems to drop. I guess it's that you have your good matches and your bad matches. When all is well, it can become a very fun competitive game. I guess all i can suggest is to of course, learn some decent moves with your favourite characters and enjoy ;D
Hope this helped give someone a basic idea.