The first one was badass, but this one is definately a step above in many ways. I remember d 1 streets were pretty much empty after a certain point in the game but in d2 you have to battle your way to the next mission or activity. Which in my opinion makes the game allot more of a challenge,i only wish the actual story was harder than it is cause it's really a little too easy after toy reach higher levels and get better equipped.
All in all this is the best game franchise I've ever played. Look forwardto tree next one