Pros:

-Small but sweet
-Instant action
-Strangely addictive. As if all the basic elements of a good survival map are there with no distractions.

Cons:

-Low framerate
-Item and weapon placement unremarkable
-Could use another passage way up, instead of just the ramp. Maybe a dangerous side route over the edge, or a ladder up.

Conclusion:

I played this one over and over and didn't seem to get bored. It gets right to the mayhem, but still encourages creativity. Unfortunately, I and every friend whom I've showed this map starts out saying the same thing: "dear god, lag". The map is good enough for you to ignore the lag, but I think I'm going to wait for an update before I come back to it.