Four-level solo/coop scenario. While this one was designed to be played coop (and designed well), it was also been built to handle solo play very nicely. It's not easy, but it keeps the adrenaline flowing without building up too much frustration. Snazzy little tricks, multiple paths to each objective (some will have you banging your head and saying, "Why didn't I think of that first?"), and overall kickass level construction make this one a winner. Robert Blake comes off as a bit of a psycho, but what else is new?