Wasn't Mad Dog (Yayan Ruhian) killed in the previous film?  That had some of the best martial arts fighting I've ever seen.  I see the actor is back for Raid 2.  
Yeah, but the villian(s) in this one more than compensate for it.
Though I have to admit the title is misleading.  The first one Raid actually was about a raid on a building.  This one isn't.  Just a continuation of the Life and Times Of A Bad Ass Martial Artist That Everyone Thinks They Can Betray And Get Away With.