Haven't played this in a while, so I took a quick look at the mapset, and yep the names Not That Simple (map07), High-Tech Grave (09), Mountain Depot (20 hell yea), Showdown (23), Diehard (24), City Of The Unavenged (28) and goddamn Viper (30) all jump out at me.
Reading this thread made me want to play through this again, but at the last second I instead downloaded Alien Vendetta and am currently absorbing that one for the first time. Gotta keep moving...