Lots of fun for a good price!
I really didn't know what to expect from a DLC as this is the first single player expansion I've bought, but was not disappointed at all.
The main story is funny and just long enough to be worth the purchase. I'd like a couple more sidemissions though, but I'm not complaining. Dr. Ned (who totally isn't Dr. Zed) makes an appearance and is the main source for your missions, and T.K. Baha makes a welcome return, although you have to look a bit for him.
My only grind would be the travel system, you have to walk between the places you want to visit, hardly any quickjump aside from the mission related teleports. No cars either, and although not really needed here I'm hoping for different vehicles in future DLC's. Maybe even boats or helicopters for use in a Zelda Wind Waker-style ocean map?
Zombies are varied and an exellent diversion from the gun toting humans and fast monsters of the main game. They're a real pleasure to gib too! Headshots are even more splattering and satisfying, and the pace feels different. A nice change that doesn't outstay its welcome.
The audio fits perfectly with the theme, all accounting the music, ambience, sound effects and zombie groaning. It doesn't sound rushed at all, big plus for that one!
Most of the new locations look great, although some better than others. I wasn't really wowed here, aside from one scene when I entered a mountain cave opening carved like some kind of monster. Nice!
In short: If you like zombies and Borderlands, go for it! I had a blast. :)
