The Facts - This is Clayton's first level and not many authors open with a level this innovative. The ideas are fresh and it is fun trying to spot the scenes taken from the Rock movie whilst wasting troopers. The scene mentioned earlier where you hear the gunfight above while in the sewers is a classic and very atmospheric. More creativity in architectural design and texturing and this would have been one of the top levels.
The Facts - This level was a long time in the making, and even though it has a confused and somewhat unoriginal design, it is really very impressive in the level of detail. I personally didn't find it a terribly enjoyable level to play first time around because of the confusing design, but after two-three plays it starts to warm on you.