Make your way into the black sapphire and locate the maintenance tunnel entrances leading down. Getting to the core requires technical 15 to bypass the vents, but there's usually an alternate path if needed. Follow those weird blackwall traces through flooded sections, they'll guide you to the main facility where you'll need to shut down three security subsystems from terminals marked red.

Moving through the tunnels needs careful timing, especially with those cerberus bots patrolling around. Your best bet is staying quiet and using environmental hacks, or overclocked cyberware if you've got it. The final stretch has these shifting laser grids, so time your aerial dashes carefully between gaps.

Good to know that some big story decisions come up once you reach the core, might want to save before making your choice. Keep an eye out for unstable ceiling sections and rogue ai systems while you're down there, the whole place has this creepy vibe from all those old neural experiments they did.