Toshi Tensou Keikaku - Eternal City © 1991 Naxat Soft.
You take control of Argyderos, a mecha, which is driven by a girl pilot Minty Geile. It is a traditional shooter/platform game, each stage is pretty huge and a big villain is waiting for you at the bottom of it. You start the game with a simple Vulcan gun which will get warm and you will lose fire power if you use it too often. Each stage has a save point and you will receive a password.
Game ID: NX91003
Released on April 12, 1991 in Japan for 6900 Yen.
Reviews:
1990 - Consoles + HS N.2 [FR]: 44/100
Game's ROM.
Game's description by Laurent Kermel; http://www.videogameden.com