Really good design concept. I had such fun plowing through this on Total Carnage -- there was nary a dull map and I'm now a better player for having gone through it all. "The Final Sacrifice" is so depressingly difficult, though -- it seems like there's no health or save point whatsoever for the player after you jump from the starting ledge. I guess that was the intention. I also seem to recall at least one map in earlier editions that isn't here. Other than that, however, pretty addicting.