A pretty well laid out level. You'll be far too busy trying to stay alive the first time through to really take stock of your surroundings, but don't worry, there are ways around that... For your own enjoyment, don't read the terms before playing.
Three (well, really two) levels. Visually pretty appealing. Playable as net levels, as well. Some pretty cool tricks (check out the reactor on the second level carefully).
You are the Marathonian, the Hulk Hunter. This should give you a pretty good idea of the plot of this level... (Actually, the readme's pretty interesting.)
Named for lighting effects that you don't have enough time to pay attention to... Mostly pretty tight (not too much open space), but spread out enough that there's room for 4 or so players. Two rechargers that are VERY hard to use, especially with more than two players...
Picks up where Encounter:Colony leaves off. Your job is to clean out a Pfhor ship with the help of some crack marines. Requires Enter the Marines shapes patch (included). Not all that hard, unfortunately...
Pretty big (looks like you'd need four or so for comfortable net play), but really well done. Some very nice features (polished crushers, e.g.). A little of everything...
Three maps, and a physics model that bumps up the aliens' skill without changing your abilities. Inspired by 20 Minutes of Hell, these are good for those times when you just need to waste some Pfhor...
Butch said he was done with these, but he lied. Three more levels, one modified bungie and two original. Pistol Parlor gets some nice action with pistols as the only weapon...