Good fun, and an awesome level - named for having the most polygons in the series I think, and was it even the maximum possible? It is certainly a level in many parts! And btw, you could always get back to that 2x health at the start, even without your beacons and such :). Well, except for during the time with that blue hunter.
I think he's the one that rises up in the big dark room you get shut in. I didn't think you could actually kick him even, but you guys got his attention very quickly. Presumably his brother was on the previous Earth level ... but that story kind of falls away.