This wad is a great sequel to the Plutonia Experiment. But lol, there are more Imps than Chaingunners unlike Plutonia 1 and Go 4 It is an even more insane version of Go 2 It. Still, great megawad and it should be an official sequel of Plutonia
Very good megawad in the TNT: Evilution style but with cool design ideas. It uses a lot of the TNT music, but also music from other Doom IWADs. Also very challenging and not always well-balanced, sometimes with deadly traps, but overall highly playable and with cool architecture and ambience.
Epic wad in the style of Quake 2 (whereas Darkening I was in the style of Quake), with lots of fresh new textures, new music and complex techbase design, and headed by an author who's online even today.