With Robb & Cat dying, I was very upset. I loved both of their characters. Then they go and kill Joff a few chapters later! I'm wondering if they could possibly kill off anyone else. Then they go and kill Tywin & Lysa. (And possibly The Hound) Not that either Lysa's or Joff's death bother me. I'm just happy Jon and Tyrion live. If they had killed either of them, I'd have started fuming. Not to say that won't happen in book 4 (haven't read it yet)
Then in the epilogue, Cat is "alive" again, which I honestly was not expecting at all. Crazy as hell. The whole thing with the Wall was probably one of the most epic things I've read. Jon being the head of the brothers I was predicting all the way back in book one. Love this damn series.
I'm left wondering though how does Martin write himself out of this one? I mean I know new characters are brought in each book, and several deaths are expected, but this book killed a fuckton of characters. /shrug. I guess he has a plan.