Overview

Andrew Ryan may proclaim that it was his magnificent vision and legendary will that made Rapture—and that may be true—but a city of this scale doesn’t run on ideology alone. No, it takes energy. And what better source of energy than geothermal—it’s plentiful, it’s renewable, and nobody on the surface needs to know you’re using it. Although the rest of the world wouldn’t learn about plate tectonics and the volcanic spreading along the Mid-Atlantic Ridge for decades, Ryan and his scientists were already putting these phenomena to use in the 1940’s.

Hephaestus was created to be the power hub of Rapture, both literally and figuratively. It is here where the energy to power the city’s lights and heat its coffee originates. But, if you look beyond the machinery and the generators, as Jack must now do, you’ll also find Ryan’s personal office. The man at the helm of this massive undersea enterprise doesn’t reside in some penthouse suite high above the seafloor, but rather down in the trenches, for he is its foundation, its bedrock.

OBJECTIVES Go to Andrew Ryan’s Office. Overload the Core. Search Heat Loss Monitoring. Go to Kyburz’s Workshops. Finish Kyburz’s EMP Bomb. Place the Device on the Core. Redirect the Magma Flow. Destroy Ryan’s Mag-Locks. New Discoveries Plasmids and Tonics Frozen Field 2 Reduces damage from cold and adds a freezing ability to wrench attacks. Security Evasion 2 Security Cameras and Turrets take much longer to see you. Damage Research Increases the damage bonuses gained from research. Shorten Alarms 2 Decreases the length of time that security alarms stay active when you are spotted.

Little Sisters

You’ll encounter the first of three Little Sisters in the Hephaestus Core, on the uppermost walkway. It’s guarded closely by an Elite Bouncer.

This Little Sister is with her Big Daddy on the walkway that wraps around Hephaestus Core. You’ll likely encounter them on your way to the Workshops.

Hurry to Upper Heat Loss Monitoring to get this Little Sister while she’s up and about.