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.