Watch Your Step

Veins of Helios: Wait for worker bots to lay down pipes to jump down. Proceed forward to a jump pad. You can use this jump pad to reach another platform with more jump pads, or look over the edge for a path below. The goal is to reach the Central Maintenance area. To do this quickly, use the initial jump pad, then drop to an area below to reach a platform with another jump pad. Alternatively, ignore the first jump pad and jump into the area below, which has a long shaft. At the bottom, head outside to find a jump pad that leads to a platform directly above the Central Maintenance area.

To the Eye of Helios: After dropping down, clear the area of enemies and proceed through the airlock. Fight through Infected and Lost Legion enemies in the first two rooms. In the last room, continue through a tunnel filled with more enemies. Halfway through, Zarpedon will detonate barrels, destroying the tunnel. Your objective is to reach the door directly across from where the tunnel was blown. To do this, you must destroy the regulators on the plasma boosters to blast a way to that area. Backtrack slightly and take a nearby jump pad to a platform with holes. Drop inside and kill all enemies. Look for flashing green plasma regulators, with one on each floor. Destroy all three. Then, move to the next set of regulators, which are designed similarly. With both sets destroyed, move a safe distance away (the platform leading to Central Maintenance is a good spot) and interact with the console. Jack will activate something, allowing you to use the jump pad to reach the door leading to the Lunar Launching Station.

Lunar Launching Station: Run into the main area and go straight ahead to access a console that opens the doors in front of you. You will notice an optional objective to find and activate a FIX Loader with its GUN Loader program. One should be in the first large area; walk up to it and press the indicated button to complete this objective. Proceed through the opened doors into the next area. Step onto the elevator, which will move automatically. Activate the fast travel station when prompted to let Jack into the area. Follow Jack into the next room and attempt to shut down the laser, which will fail. Talk to Jack to finish the mission.