Thanks for playing and for the video review.
But just to be clear, the game is designed as a single-player game where one person controls both characters. It's best experienced with two NES controllers held sideways, like Wii-motes. For emulation, it plays well, too, with one character assigned to WASD on the keyboard for moving and the other character assigned to the Arrow Keys, with the Select button mapped for each wherever makes sense to the player. ;)