Extremely addicting, buy it.
Graphics: Not a whole lot to say. Bland but they get the jub done. The graphics in the second episode look better than the first though.
Sound: The smack of your weapons hitting the enemy and the sound of the enemies dying is about all. Play with your friends and that will be all of the dialogue you need.
Value: Absolutely worth it. I have played almost 300 hours on one character and still am getting plenty out of it. Buy it and you will not regret it.
Tilt: Great multiplayer and a solid RPG. But if you want plot, this is not the game for you.