Sad but true, this is just a rehash of Dead City II and Left Behind with a boring rooftop ending. Copy, paste. old map, make a tunnel longer, copy paste, repeat... wow. Play the very excellent other maps by these authors. Old age, whatever that is now for them all, has stunted their creativity. Want 5-6 maps and excellent, try Buried Deep or Cold Front. Even Red Tide smokes this. Pretty bad stuff.
Just a copy/paste rehash of earlier maps
This review was posted before the latest release.