Largely the same but addresses others and my own problems with the original. He has a new head that is more solid. Rather than having a gas mask he has a surgical mask. Completely new upper arms were added. His crotch piece has been reversed which grants more articulation. I added a Toxic Sludge Shotgun as a weapon, and it can store on his back. Shorter axle on his calf gives him greater knee articulation. Finally the "Hair" pieces that were originally on his head are now on his shoulders.
For a Titan build he is very well articulated. He has four shoulder joints in total which gives him plenty of motion. He has two neck joints which allows him to emote. He has a lateral joint on his "butt" joint (used for reinforcing his hip joint) that gives him above average motion in his hips compared to similar set ups. He can also easily do the splits as shown above. He also has an excellent waist joint which is sadly a little too loose.
Something that I didn't properly demonstrate in the original Toxin photo was his chest which is patterned after the radioactivity symbol.