Super Hydlide is the Sega Genesis remake of Hydlide 3: The Space Memories (ハイドライド３ 異次元の思い出), which was originally released only in Japan for the MSX, PC-88, Famicom, and other systems. It has a simple plot of a hero trying to find the source of an ominous evil after the main fairy of his land disappears and a mysterious fissure opens up in the middle of the land. It has a number of features that were novel for RPGs at the time such as hunger, sleep, and weight meters, and it even makes the genre transition from traditional European fantasy to space sci-fi for a brief moment.
TheAxeMan, having studied the mechanics of the game, manages to bullrush through the game at a low level and beat it in record time. For details on those mechanics and how the run was performed, you can read the author notes.
There is author's commentary embedded in the movie file and in the YouTube encode in the form of captions.