Dark Fluid

Dark Fluid is a highly-classified, experimental substance weaponized by Super Earth in their battle against the Terminids. Originally of Illuminate origin, it was weaponized by Super Earth's scientists to aid in the destruction of the Supercolony on Meridia.

Lore

Dark Fluid is first mentioned (in-game) with Super Earth's Major Order, which ordered Helldivers to defend the planets of Turing, Angel's Venture and Fenrir III, which would be used as staging areas to attack, and eventually destroy Meridia's Supercolony.

Confirmed to be Illuminate technology stolen at end of the First Galactic War, it is the first mention of alien technology being explicitly used by Super Earth. While its original use is currently unknown, the weaponized version of it is extremely dangerous, as an accident in the Moradesh Dark Fluid research facility created a micro-black hole, resulting in the spaghettification of 12 facility members. Luckily, the micro-black hole evaporated, which meant that no long-term harm was caused on the facility.

It was deployed into the crust of Meridia by the Helldivers, before reaching critical mass, successfully eradicating the supercolony and leaving a black hole in its place.

Trivia

• The introduction of the Dark Fluid is the first official mention of the Illuminate in Helldivers 2, which would not be added to the game until over 6 months later.
• The name of the substance references the conceptual Dark Fluid, a hypothetical fluid that varies between attraction and repulsion depending on local energy density, this connection is directly stated by the Service Technician in a voiceline during Operation Enduring Peace.

Gallery

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  A Helldiver equipped with a Dark Fluid Vessel
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  A Helldiver about to insert a Dark Fluid Vessel into a Tectonic Drill