5 levels, focus is on vertical movement. Everything is fast - hesitate and you're lost. (Elevators, for example, generally visit a level for a second or two - time the jump-off, or head back to where you started. Once you get a feel for the layout, it works quite well... but at the start, you'll get shot a LOT by people chasing you.) Check 'em out!
A large, convoluted level with lots of staircases and chutes. A little too much use of the safety hazard texture, but other than that, a very nice map.
A very nice M1 net map... felt a lot like a combination of a bunch of Bungie's net maps. Twisty passageways, a large two-tier arena, teleporters to take you from here to there with no waiting, and a few little secrets... worth playing.