The Ninja Warriors/Stage 1

Welcome to the game. Once Kunoichi and Ninja have appeared on the screen, start walking to the right as fourteen light-green-uniformed knife-wielding soldiers come running towards you from both sides of the screen; once you've stabbed (or thrown a shuriken at) each of these to kill them for 300 points apiece, two dark-green-uniformed rifle-wielding soldiers will come running towards you from both sides of the screen and fire a shot at you. Once you've crouched down and killed both of these for 400 points apiece, ten more light-green-uniformed soldiers will come running towards you from both sides of the screen - and once you have killed all of these, two more dark-green-uniformed soldiers will come running towards you from both sides of the screen and fire a shot at you. Once you've crouched down and killed both of them, ten more light-green-uniformed soldiers will come running towards you from both sides of the screen; once you have killed all ten of these soldiers, a hunchbacked mutant shall drop down to the ground from the top of the screen.

Once you've stabbed this mutant five times (or thrown five shurikens at him) to kill him for 500 points and five extra shurikens (each hit is also indicated by him hissing from the Yamaha YM-2610) eleven further light-green-uniformed soldiers shall come running towards you from both sides of the screen; once you kill all of these, two more dark-green-uniformed soldiers shall come running towards you from both sides of the screen, and fire a shot at you. Once you crouch down and kill both of these, twelve more light-green-uniformed soldiers will come running towards you from both sides of the screen - and once you've killed all of these, an ochre-uniformed mortar-gun-wielding soldier will come running towards you from the right side of the screen and fire a shot at you. After you have crouched down and killed him for 400 points, thirteen more light-green-uniformed soldiers shall come running towards you from both sides of the screen; after you have killed all of them, a seventh dark-green-uniformed soldier and three more light-green-uniformed ones will come running towards you from the right side of the screen with a non-attacking dark-green-uniformed commander (who's worth 300 points). If you don't kill all these enemies quickly enough, the commander will order Retreat! from the Yamaha YM-2610 and any survivors (including the commander himself) shall run back off the screen's right side - and two further hunchbacked mutants shall now drop down to the ground from the top of the screen.

Once you have stabbed both of these mutants five times (or thrown five shurikens at both of them) to kill them (their deaths are also worth a total of ten more extra shurikens), three more light-green-uniformed soldiers shall come running towards you from both sides of the screen; once you've killed both of these, two more dark-green-uniformed soldiers shall come running towards you from both sides of the screen and fire a shot at you. After you crouch down and kill both of them, fifteen more light-green-uniformed soldiers shall come running towards you from both sides of the screen - and after you kill all of them, two more ochre-uniformed soldiers will come running towards you from both sides of the screen and fire off a shot at you. Once you crouch down and kill both of them, four more light-green-uniformed soldiers will come running towards you from both sides of the screen, while a purple-suited rifle-wielding gangster emerges from an open garage and fires a shot at you; once you stab all the light-green-uniformed soldiers and throw a shuriken at the gangster to kill him for 400 points (as he will duck back into the garage if you get too close), two more dark-green-uniformed soldiers shall come running towards you from both sides of the screen then fire a shot at you. Once you've crouched down and killed both of them, three more light-green-uniformed soldiers will come running towards you from the right side of the screen - and once you've killed all of these, a twelfth dark-green-uniformed soldier and two more light-green-uniformed ones will come running towards you from the right side of the screen, and these ones will be accompanied by another non-attacking dark-green-uniformed commander. Again, if you do not manage to kill all these enemies quickly enough, the commander will order Retreat! from the Yamaha YM-2610, and any survivors (including the commander himself) will run back off the screen's right side; six more light-green-uniformed soldiers shall then come running towards you, from both sides of the screen. Once you've killed all of these, two attack dogs and two teal-uniformed knife-wielding soldiers will drop down to the ground, from the top of the screen - and once you've crouched down and killed all of these (the attack dogs are worth 500 points apiece, and the soldiers are worth 300), three more attack dogs and two more teal-uniformed soldiers will come running towards you from both sides of the screen. After you crouch down and kill all of them, seven more attack dogs will come running towards you from both sides of the screen; after you have crouched down and killed all of them, the stage's boss (who's a black-suited, red-haired, Katana-sword-wielding female ninja) shall appear in front of you. After you have stabbed her five times (or thrown five shurikens at her) to kill her for 800 points and five more extra shurikens (every hit will also be indicated by her shrieking from the Yamaha YM-2610), Kunoichi and Ninja will walk through the open metal door on the right side of the screen - and both players will now receive a bonus of 50 points for every shuriken they have remaining (along with one of 30 points for every fragment of energy they have remaining), before proceeding to the second stage, which is the first one that features tanks.