Your boots echo against the titanium‑bulkhead as the bio‑acoustic‑sonar leads you deeper, the crystalline‑black‑frost shimmering under a blood‑red emergency strobe, while a low, rhythmic thrum of alien infection reverberates through the hull. A sudden shudder rattles the containment‑reactor, and a jagged fissure widens, leaking black frost‑laden water into the corridor.