This is a tool-assisted speedrun. For more information, see http://tasvideos.org/3902M.html. TAS originally published on 2019-02-16.
The GBA version of Super Ghouls 'n Ghosts (Japan: Chōmakaimura R) is a port of the infamous SNES game with the same title, featuring a new game mode - the Arrange mode which adds stages based on other entries in the Ghouls series, for instance the original Ghosts 'n Goblins or Ghouls 'n Ghosts, as well as more difficult stages from Super Ghouls'n Ghosts itself.
Fred plays through the Arrange Mode and defeats Sardius in record time.