I don’t know much about speed runs, but to me it looks like he is using some type of assistants or cheats.
I am not a big fan of GH, I know, I know, I am one of the few. This video does blow my mind, watching this kid do his thing.
Sunday I posted the video of the boy getting an NES for Christmas. Here’s 2 generations later, the boy getting an N64 for Christmas.
This is what Mario would of looked like on a Atari 2600.
Link
This is the famous video of the boy freaking out when he get a NES for Christmas.