Part 18

In the initial hallway, defeat the patrolling hunters. Navigate the halls, avoiding going in the direction where you see yourself in the distance.

Find the door to the next area. Kill the harvesters inside and locate the touch screen monitor to switch gravity.

Use the moving lift platforms to descend to the next area.

Follow the wallwalk and step through the orange portal.

In the new area, prioritize killing the flying enemies.

Push the explosive ball near the strange material on the platform ahead to destroy it.

Move onto the platform and jump down to the grid below.

Go through the orange portal at the end of the bridge.

Take a shuttle and pilot it to the platform diagonal to the two catwalks with hunters.

Exit the shuttle and enter the door with the blue light.

Step through the blue portal in this room to end the level.

You will achieve the achievement "The Complex".

You will then enter the next section, "Ascent". Spirit walk through the blue energy, past the laser grid, and use the touch screen monitor to disable the lasers.

Defeat the flying harvesters on the opposite side of the door.

Make your way to the opposite end of this area and destroy the blue castle attached to the middle platform.

Approach the door and use the alien hand on the hand identification panel to open it.

Step through, move to the end of the room, and use the switch near the door to power the shuttle elevator.

Enter the next room where a strange voice will speak and show a holographic representation of the tower you will ascend.

Head back through the door once it opens. Exit back to the outside area and defeat the flying harvesters that have spawned.

Move to the end of this side of the area and spawn a shuttle using the shuttle pad.

Pilot the shuttle into the blue ring, which acts as an elevator to a higher area.

At the top, use the shuttle's cannons to destroy the two mounted turrets. Exit the vehicle on the shuttle pad.

Find the ammunition container and leech gun stations. Locate a touch screen monitor to unlock the gate at the top.

Return to the shuttle and pilot it through the unlocked gate. Your objective is to reach the top and go through the gate. Avoid mines and energy projectiles.

In the next area, kill the hunters. Fly around and search for a small opening in the wall.

Use the shuttle's tractor beam to pull debris out of the way and fly through the opening.

Land the shuttle on the pad in the middle of the area. Kill the hunter and destroy the two security guns in the top corners.

Locate the hand identification panel and use the alien hand to unlock the gate.

Get back on the shuttle and fly it out of the unlocked gate. Remove the debris tower and fly into the open.

Pilot the ship towards the planetoid in the middle of the area. Locate the shuttle pad on the top part and exit the shuttle.

Defeat the flying drones. Follow the pipes connected to the shuttle pad area to the end and press the switch.

Follow the pipes back to the shuttle pad, board the shuttle, and fly to the platform with the blue ring elevator. Exit the shuttle.

Use the touch screen monitor to open the elevator entrance. Get back in the shuttle and fly into the blue energy ring.

As the transporter brings you to your destination, fly straight towards the platform ahead and exit the shuttle.

Destroy the enemies and collect additional ammo. Locate the touch screen panel to assemble another elevator.

Enter a shuttle and fly into the blue ring transporter. Upon arrival, fly to the shuttle pad and exit.

Move around the platform to a gap. Shoot the green glowing gravity panel on the roof across the gap.

Walk across to the other side, then shoot the gravity switch above to flip gravity back.

Destroy all enemies. Spirit walk through the plasma discharge.

Walk up the steps, jump through the forcefield, and use the touch screen monitor to turn off the plasma.

Return to your body, jump up, and walk through the tunnel.

Navigate the halls until you reach a large room with a strange power source in the middle. Shoot the blue capsules connected to the four white energy beams.

After destroying all blue capsules, exit the room and follow the hall. Kill the harvesters encountered.

Shoot the gravity switch on the ceiling. Locate the blue portal and fall down it to end the level.

You will achieve the achievement "Ascent".