Seemed an awful lot like a cross between Thunderdome and House of Pain (using HoP's textures).

Claustrophobic.

A small, donut-shaped arena with a series of stairs around the outside, and some notches on the inside. Too small to stop moving for long...

A multilevel arena. The textures keep you from getting your bearings for a little while... and your opponents will keep you from it for as long as you play. Very open, with lots of ways to get from point a to point b. Always check above you...

Actual level title is much, much longer. (Check the readme.) Very dark, with crushers everywhere... and no way out of the pit.

Huge. Lots of square rooms, with floating stones i the center, and sewage pits filled with drones, linked by sewage passageways. Some cool effects, but no plot to speak of (well, stay alive long enough to see the whole thing...).

A straightforward carnage arena. Two pillars in the center, a sewage-filled passageway around the outside, and some outside ledges. There seem to be some bad walls (poly edges with actual textures assigned, even though it's supposed to be open space), but I didn't get any crashes because of it...

A 3-level solo scenario. As the author says, the plot's a little hokey, but the levels are quite well done. (I've got a pretty big gripe with the last level... if you leave the tower, you can't get back in. There's a door, but it's only one way... You've got to restart from a saved game, and I didn't have one.) Watch yourself when you're close to a goal... the baddies have a nasty habit of showing up at the last minute.

A large, rather geometrical level. Lots of different areas, with different challenges and tricks. Heavy use of windows-use 'em for sniping.