Sonic Generations 100% Walkthrough [Missions] - Chemical Plant Modern - Doppelganger Race

READ THE DESCRIPTION!! Since we've finished the story for the Game, it's now time to complete some Missions! This mission is called Doppelganger Race and you probably know what you're supposed to do in this mission by now. Game: Sonic Generations Platform I'm playing: Xbox 360 It's Sonic's 20th anniversary and I'm doing a 100% Walkthrough on my 1st try through the game. Hard I know but I will make it somehow. That means all Red Rings, all Missions, etc. I'm going to show everything in the collection room and skill shop AND MORE (it's a surprise). Stay tuned guys and gals cause this is going to be a SONICTASTIC experience!! This playthrough WILL have commentary =D Also be sure to check these 2 Youtubers as well cause we're doing a Collab and we're gonna help each other on the way. Links:    / frokenok3      / sonicfan1984   Frokenok3 is playing the PS3 version and sonicfan1984 is playing the 360 version (same as me!) A whole new experience to watch! =D