Terrible, awful - just grim. The first few rounds are only mind-numbingly dull as the "map" is only slightly more than a box with added monsters. The round when the controllers and gonarch spawn is just a disgrace. The box is empty of anywhere to hide, there's a dozen controllers over you firing at will, and the gonarch is camping the painfully slow trigger_push "elevator" which is the only way to escape. Oh, did I mention you only get the pistol at spawn? Well yes. If you haven't quit by then, this is definitely the time.
Imagine you got stupidly drunk and ate some incredibly fiery chilli food and possibly broken glass, experiencing this map is the equivalent of the next day, sat on the WC in utter misery. Just don't do it.
A great shame, because Emteg maps are usually very good - hopefully this was a very early one.