Pros:

The map is interesting to play through a couple of times.
L4D1 Survivor usage
Well designed with no glitchy props 
Traps are pretty well made
Very challenging which I find entertaining 

Cons:

All the traps do most of the time is spawn hordes of zombies.
No proper finale 
Maybe furnish the interior a bit

Conclusion:

A good map. I enjoy trap maps, but may I recommend to be a bit more creative with the traps, check out the campaign Powerstation. Its an amazing campaign and my favorite aspect are the traps. And they are designed very well