Barbarian is a game developed and published by Psygnosis in 1987. As a barbarian, the player is tasked to navigate through dungeons filled with enemies and traps. Gameplay is done via on-screen icons that can be selected with the mouse, joystick or the function keys, which, suffice to say, isn't the best control scheme for this genre.
eien86 braces through the control scheme and reaches the end in record time.
There is also an alternate YouTube stream featuring audio commentary by the author.