It's still unfinished but damn! This is pretty good for something fanmade. This guy has a bright future in animation.
He even made a fanmade trailer!
For those who aren't familiar with Hathaway's Flash, it's a semi-canon novel set 12 years after Char's Counter Attack. The main protagonist is an older Hathaway Noa (son of Bright Noa) who joins a terrorist organization and adopts the false name "Mafty Navue Erin". The organization is fighting a terrorist campaign against the Earth Federation government and they eventually able to acquire the incredibly powerful prototype RX-105 Xi Gundam, which Hathaway becomes the pilot of.