DOA 4 is fast paced, exciting and full of great action with lots to unlock and a great online mode.
Gameplay - Wow, when I first sat down to play this game I found it very difficult. Irritatingly so in fact. My experience of beat em ups in the past had led me to believe that button bashing works. I was really, really wrong. After an hour or so of getting my ass handed to me by the computer I decided I should perhaps venture to learn some moves. Hooray it worked! Soon I found myself, kicking my way through the games various modes and characters, and throughly enjoying it in the process. The games online mode only added to my enjoyment as there is a lot more fun to be had taking on human opponents as opposed to constantly being smacked about by a computer controlled Alpha and Co. The fast, slick, smooth skill based gameplay of DOA 4 works well online and off.
Graphics - Visually DOA 4 is pretty amazing. The fully interactable arenas are beautiful to look at, and the character models looks good aside from a few hair bugs on characters like Kokoro and Kasumi.
Sound - Being an anime fan, I like the Japanese voices for the games characters and the attacks themselves sound good and bone crushing. However the background music annoyed me a little and it's a game I end up playing usually with the music off or the sound off entirely.
Value - There is a lot to unlock here, outfits, characters, arenas... (at this current time I just need to master the Rajinn and the Tatami Stage is mine and everythings unlocked), plenty to keep you busy. There is also plenty of Xbox Achivements to get both online and off some of which are going to take hardcore amounts of effort to procure. Plenty of value.
Overall what you have here, a beat em up every Xbox 360 owner MUST have.