Better than the already 10-worthy first game!
The original Rebuild was one of the best games on Newgrounds. You managed to make it even better.
The minor graphical improvements, didn't really grab my attention so much as the stat building and character pictures. This is a huge improvement in the immersion of the game, because it made me actually care about my characters. I watched them grow and develop and when they died, I really cared, in a manner that flash games almost never achieve. The effect was surprising.
That with the music, which is excellent, makes for one hell of an apocalypse-survivalist atmosphere. Even the release timing was great (you gave me something to do on Halloween).
Like the first I can't think of much to improve it. You've taken an already solid game and daringly added a whole new dimension like stat building, and you definitely made it work well. Thanks very much for, once again, making one of the best flash games.