
Descend the Reactor Core and save your game at the Save Station nearby before moving on (to ultimately secure your victory over that no-good Spider Guardian). With this item in hand, exit the Hall of Combat Mastery and return to the Reactor Core (watch out for the Harmony Class Drones taking up residence above the powered-down gyros in the Minigyro Chamber). Go inside and make your way through the (long and tedious) narrow confines of the tunnels to retrieve Missile SA.03. Once back in the main chamber, look for another Spider Ball track nearby leading up into a narrow tunnel network lining the inner walls. Scan the Luminoth Lore Projector on the wall nearby before using the Spider Ball to escape the chamber (scan the Spider Ball track first for your Logbook).

Beyond the door ahead you'll find yourself back in the Hall of Combat Mastery in a glassed-off enclosure you previously couldn't access. Bust open the stacked Luminoth crates beside the door to recover precious health, then take the lift down below. Inside is a similar elevator transport to the one you used earlier in the Ing Hive. From here you can now climb up the track to the door above beside the body of a fallen Luminoth warrior. With this item snagged follow the chute behind it to drop out into the main chamber of the Dynamo Works.

Bomb-jump up there and follow the tunnels around to locate Missile SA.02. From here you may hear that familiar humming sound, look closely in the roof to see an opening. Ignore the two Pillbugs taking up residence and head up to the tracks at the highest part of the network.

Travel back through the Dynamo Works tunnel network, using your new toy to attach to the Spider Ball tracks. The Spider Ball is a sight for sore eyes.
