With the reactor on Cyone compromised, fuel is not getting to ships desperately in need in this sector. Admiral Hackett already sent in a team led by Captain Riley to get it restarted, but they are going to need an assist.
This is where you come in. You need to restart the reactor and figure out what exactly shut it down in the first place.
RECON
As soon as you arrive in the Reactor, you’re greeted by Nyrek, a turian member of the advance team. Everything’s all quiet. Take the time to do some preliminary recon on the surroundings, picking up a Rosenkov Materials Chestplate and a Medical Treatment Plan.
Be careful where you go for now. The ramps leading to the reactor housing are filled with radioactive clouds that ignore your shields and sap your health quickly. Talk to Captain Riley when you’re ready.
GOING DEEPER
Captain Riley’s team will need to split up from yours to activate the other reactor in the facility. One of her men will move a crate to allow you access deeper into the facility.
Look for a control panel that handles moving the heavy crates that block your path. The controls are simple enough. The center button picks up or puts down a crate. The left and right switches move the crane. You need to move two containers to the right to proceed.
Once past the containers, Riley calls in that she can see the fuel rod controls, but radiation is blocking access. You need to vent the radiation away before you can safely access the controls.
The vent controls are very close to where the containers once blocked your path, but take this time to explore the other parts of the facility that are not irradiated.
After you vent the radiation, the path to the fuel rod controls is safe. Explore the formerly irradiated areas, then activate the controls.
REAPER AMBUSH
The moment you unlock the fuel rods, Cortez informs you that other movement has been detected in the facility. You’re beset by Marauders and Husks.
Barrier engines activate on the walls, granting your enemies extra protection. Take those out as soon as you see them!
RESTARTING
After clearing out the hostiles, the reactors fail to restart. You need to seal the moderator tanks before a restart is possible, and this means going deeper into the facility. There are two tanks to seal.
With the tanks sealed, the restart controls become active. Make sure you’ve located everything you need, and get ready for a fight.
Marauders and Husks drop in from above, and a series of barrier engines activate near the reactor controls. Take them out quickly, then turn your attention to the Husks. The sooner they die, the sooner you can concentrate on the Marauders.
Once you deal with this wave, Captain Riley calls in. Her situation is desperate. You can offer her support for Paragon points, or you can tell her to soldier on and gain Renegade points.
If you do send support, the next fight can get a little tricky, so pick who you send off wisely.
THE CORE
Whatever you choose to do, the reactor core opens, revealing another ambush led by a Brute enjoying the benefits of a barrier engine mounted inside the core.
Try to take out the engine before the Brute comes charging out after you, then deal with the Marauders inside.
Once you’ve dealt with this final ambush, Cortez radios that he can’t raise the other team, regardless of what you choose to do. Finalize the reactor restart, then head to the pickup point.
If you sent support, you’ll find that Captain Riley and Nyrek made it out okay, though they’re a little worse for wear.