Really enjoying the demo! Me and my son went through it in co-op, its a blast. Quite a bit has changed since the first one. I really like the random paths being blocked, so each run through you have to go a different way. Throw in the randomized zombies and director 'knows how your doing' on the fly tweaks, and its great! Way more guns, weapons, and zombie types too! I'd say its more then just an expansion over the first for sure (we played that alot too).
Anybody find that juke box? Listen to that song "Re: Your Brains", its hilarious if you can live through the whole thing!
"..and here's and FYI... You're all going to die, SCREAMING! All... We... Want to do... Is eat your brains..." LOL
