The round tube-like contraption in the middle of the map may very well be one of those reactor cores you see in the movies. The only bug I found was a slight HOM problem that is visible from the bottom of the main room when you look up at the doors. This does not effect gameplay though. Other than that there is nothing. Great bots also.
Performance is perfect.
Even though the main room is where most of the action is, somehow the rest of the map keeps itself from being abandoned. The map really flows well because of this. The hallways are small and can be hard to dodge bullets and rockets in though. The author recommends 2-8 players for this level, but if you have any less than 5, it'll turn into a hunting game. Items are placed well.