This Sonic Unleashed run is hilarious. It's so GOOD. I expect this run to get a MILLION views. It's so GOOD. (referencing something said later on in the stream, haha)
you've... never seen any gameplay of the HD version of Unleashed? How is that possible? It's the better version, that's crazy also, oof the ps2 version is by far the worst of both SD and HD.
Haven't finished the video yet so unsure if you've figured it out, but the super fast jump boost may be a reference or the same thing as the glitch from Unleashed and Gen called M speed. Walking slowly and jump boosting gets you massive speed.