A solo level with no save term. You'll find yourself doing it several times, as you run into each new trap... and parts can be pretty repetitive, but it's a fun half-hour or so. Fun terms.

A pretty cool small level designed for two players. You face each other across a lava moat. Both have a large wall to hide behind, but your opponent can raise yours with a well-placed projectile, leaving you defenseless... and for those who believe the best defense is a good offense, you can build a bridge across the moat (although it's not necessary-you can simply run across, using the alcoves on the side).

A simple arena in two flavors... one has a walkway around the outside of a lava pool, the other is the same with a hill poly in the center. Weapons are really tight (looks like they're set up for two-player games... which is okay, I guess, since more than three (or maybe four) would be insane.

A pretty interesting level, with lots of secret (or semisecret) doors. Flow is great, once you've figured out where these doors are... and there's a little something for everyone. Open spaces, tight corridors, hideaways... there's always a way out of wherever you are. Watch the double jugs (non-trivial to trigger, so you may not see them).