The narrative is primarily delivered through a scrolling text intro and disembodied audio logs from past explorers discovered as you descend the 10 main floors.

: After completing the primary story, the dungeon expands into 90 additional randomly generated zones, offering a "true grind" for a total of 100 areas.

See the opening cinematic and lore setup that explains the creation of the Metal Dungeon: Metal Dungeon - GXP Reviews Ghost of Xbox Past YouTube• Oct 16, 2016 Metal Dungeon (Xbox) Review - HonestGamers

: The main story mode concludes after clearing the first ten levels, where your team must face the Gods of Magic or their high-level guardians in the final control rooms.

To gain an edge in a long-standing war, the Giamel region began creating "Weapon Monsters"—deadly bio-mechanical hybrids—by capturing and exploiting the "Gods of Magic," a group of ancient, powerful sorcerers. The plan backfired when the sorcerers partially awakened from their trances and used their immense powers to seize control of the facility's main computer.

The resulting chaos led to the slaughter of the facility’s scientists and guards, leaving the underground complex—now dubbed the —flooded with rampaging bio-monsters. Your Mission: The Enforcers