hmm this looks interesting
i know one of the hardest game i played was called i think robocop vs terminator. my cousin and i played it with game genie with a bunch of cheats, infinite ammo etc.
well the final boss was this like floating skull thing that shot all these bullets etc out of it, and we set it up where robocop had this machine gun shooting at it. we placed him in a way where he would always hit the skull, and taped down the shoot button on our turbo controller.
it took over 40 minutes of pure shooting to kill the boss