Victory Road (怒号層圏, Dogō Sōken (Bellowing Atmosphere)), is the sequel to Ikari Warriors.
The objective is to defeat the enemy aliens using grenades and other weapons.
The original arcade game featured an 8-way joystick that could be twisted in place to rotate the onscreen character allowing the player to face in one of eight directions while moving in another.
It features sampled voiceovers from the main characters and the game's bosses.
The NES version includes the added feature of collecting "zeny" as currency. This money was then spent at a store also unique to the NES port where the player could buy improved weaponry and armor. The NES version emulates the controls of the arcade version by locking the facing of the character in one direction for as long as the "fire" button was depressed.
The game continued its single-stage design from its prequel, but added mini-stages where player fights a boss when entered through the green door.
Source: Wikipedia, "Victory Road (arcade game)", available under the CC-BY-SA License.