Part 60

Approach the healing chamber cautiously, as it likely contains a vortigaunt. Use hornets to clear it.

Ride the spinny up-n-down lift and quicksave before ascending.

On the walkway above, be prepared for another vortigaunt. Use hornets or AR grenades to eliminate it.

Ride the lift again, then run along the walkway to a large area behind three pillars. This is a good spot to engage three alien controllers with hornets.

Before the next lift, explore skinny, curving walkways leading to two small holes in the wall. Enter the right-hand doorway and proceed down a red-lit corridor to a spiral-screw-style room.

On the central structure, each floor has a grunt barrel guarded by a vortigaunt.

Look down at the lowest floor's grunt barrel and altfire-hornet it. Back up and fire hornets to destroy the grunt. Then, eliminate the vortigaunt, which may be hiding behind the pillar.

Move to the floor across from your current position. Aim at the right side of the grunt barrel and altfire-hornet it. Strafe left and fire hornets to kill the grunt. Locate and kill the vortigaunt, which might be behind the pillar.

Collect supplies from the current and lower floors. Drop onto the spiral walkway to reach the floor below. Use the walkway to return to the second floor.

Move along the walkway to jump to the third floor. Jump-hornet the vortigaunt on this floor. Check for supplies.

Ascend the spiral walkway to jump-hornet the vortigaunt on the fourth floor.

Save before entering the fourth floor, as it may attract alien controllers hiding above. You can skip this floor if desired, despite the health packs, armor batteries, and ammo canister.

If you choose to get the supplies, quicksave, then quickly grab them. Descend the spiral walkway to the floor below, then repeat to return to the second floor. Run to the nearby doorway and proceed around the corner to safety.

Return to the main chamber and approach the next spinny up-n-down lift. Quicksave before riding it.

This lift is difficult as it pauses briefly. Jump on quickly and be ready to jump off. Be aware of potential glitches where the lift jams and damages you. Three alien controllers will attack as you reach the top.

The best strategy is to ride the lift to the top, quickrestore if it glitches, and then ride it back down. Jump toward the area behind the three pillars and take cover. Engage the three alien controllers from this position with hornets. Alternatively, ride the lift up, enter the side area with the healing chamber, and defeat controllers as they follow.

After defeating the controllers, return to the lift area and quicksave. Continue riding the lift up and attempt to jump onto the walkway, quickrestoring if you fall or get stuck.

Once on the walkway, check the side area for a healing chamber. Stand in the doorway and face the final spinny up-n-down lift. If a vortigaunt is present, eliminate it with hornets.

Get on the lift when it stops. Wait for it to stop near the large teleporter gadget. Jump into the green center to be transported to section c4a1f.

This section is a series of platform jumps. Make running jumps to the nearest platform until you reach the large floating rock with the red teleporter. Quicksave, then jump into the red swirl to reach the "Nihilanth" chapter.