Pros:

- Loved the Christmas feel though, the lights and the music worked really well.
- The mapping is top notch. The destroyed buildings were very well made and great fun to try and hold out in.

Cons:

- A couple of common infected and a tank got stuck in the crater in the road. Not really complaining about this since it made the tank a lot easier to take down. :P

Conclusion:

Definitely a great map. There are so many options for areas to have a good old stand-off. The trashed building, the store, the alleyway, the blockade with the mini-gun, I think I ended up holding off the hordes at each of the 4 during one session.

I can't say I've come across any of the technical issues that I've seen mentioned here. Everything looks the same as the screen shots above and I played for 15 minutes, not a single crash.

Pros:

Excellent custom content.
Fantastic atmosphere.
Plenty of choke points and standoff areas to fight the infected.
Nice use of multiple levels.

Cons:

Some clipping issues, notably the stairs on the top level near the minigun and the same on the opposing side.

Conclusion:

An excellent blend of tight spaces, open areas and high ground. Utterly fantastic and frantic when played with friends and a fine example of how survival arenas should work.