This is a discussion on Final Boss Fight - Sonic Generations within the Sonic Generations forum, part of the S; How do you get near it/Damage it?
Tried 10 times now, and don't even get close to it, always run ...
Basically, you need to boost up to it as Modern, dodge the slam attack, then keep boosting into the core. You can rhythmically boost every one or two seconds to move faster. Use to switch in/out of the stream to follow him.
Plat-bar by ThunderStick, sig and avatar by Bladia of Deja View
Ive just got the last trophy for this game which was the "cant touch this" trophy,beat the boss without getting hit.I eventually did it but just had to say this is the most shittest boss fight i have ever seen i think,what a pile of crap for a boss fight.
Sig and avy by the awesomely talented stupot00 and platbar by the excellent Thunder