This stage is notable in that large portions of it contain acid producing machines, making it a very hard level and difficult to survive inside. After that the Fortress withdraw itself to Stage 7 for using for high speed of part of the stage.
This stage starts out with few enemies at first, but contains turrets in the section with the acid producing machines. On the part before the boss rush, there are lots of enemies that come from behind. Double, Tailgun, Rotating options and Aiming Options are highly recommended for that section.
|Ships||Vic Viper T-301|
|Stages||Planet Gradius Satellite Orbit • Planet Gradius City Sky A • Planet Gradius Urban Underground Hierarchy • Bacterian Cell Center • Asteroid Front Base • Bacterian Multiplication Plant • Bacterian Fortification Center • Planet Gradius City Sky B|
|Bosses||Big Core MK-I Rev.2 • Venom (lower) • Death MK III • Tetran • Big Core MK II • Big Core MK IV • Ground Spider • Huge Heart • Blaster Cannon Core • Rolling Core • Circle Core • Big Core MK III • Covered Core MK II • Beacon • Keeper's Core • Elephant Gear • Venom (upper)|