Behind the door there's a room protected by laser detectors (#205). Leave your body and eliminate the threat by deactivating them (#206). When the area is safe, move forwards.
Use the alien hand on the panel (#207). In the next room you'll see a levitating weapon that's being held by two energy beams (#208). Approach the door on the right and destroy the blue container (#209). When you do that, detectors will appear in this room.
Go back to the weapon room. This time choose the left door and do the same with another container. Now you can take the gun, which turns out to be acid-spitting. Will sure come in handy. Use it to hold off the hunters that enter the room using the portals. The last of the enemies will leave his one behind (#210) and you'll be able to use it.
In a new room press the button between the chairs (#11). Use the only door available and get rid of the enemies. Search carefully through yours surroundings, and you'll find another panel (#212) - it will deactivate the force field.
Destroy the enemies and approach the force field. To the left there's a small niche (#213) that can rotate. Enter it and spirit walk to cross the barrier and localize the button (#214).
The panel controls the rotating cabin, causing it to rotate 90 degrees. If you use it once, Tommy will be in the same corridor as you are (there's an energy weapon charging unit here). To get the Indian to the next section, use the panel once again. If you use it three times, Tommy will reach a secret room with an card-game arcade machine.
Crawl into the box (#215) that functions as a gate. A button here (#216) will open a portal for you. Go forth through the dark corridors, until you reach another gate. After you go through it, continue on and use the narrow tunnel (#217).
In the room will wall walks you'll be attacked by robots. Defeat them and spirit walk. The glowing path (#218) will let you safely cross the abyss. Push the button to turn off the force field and use the wall walk.
When on the upper level, enter the central path (#219) and go forwards. Get rid of the turret on the ceiling and crawl into the tunnel (#220). At the end of it gravity will switch and you'll end up in a room full of pipes.
Getting out of here might seem troublesome at first. In this pipe-maze it's difficult to orientate, and things don't get any easier provided you get to switch gravity. Jump down and shoot the grav-point to your right. Now shoot another one (#221), this time the one on the ceiling (there's acid-ammo near it). Turn around and go towards the wall (#222), turn right just before it. Go around the pipes and go forth. Stop half-way through between the two walls.
Look up to notice a force field blocking your way to the next room. In order to get there, just first have to be attached to the right surface. Find the grav-switch on the ceiling (#223) and then shoot it. Spirit walk to fall down through the barrier.
Look towards the floor - there's another grav-switch (#224). Hit it with a bow and press the button nearby. Go back to your body and jump down. Now look up to notice another switch (#225). When you land near the force field (#226), leave the body once again and go through it.
Hit the switch and get back to Tommy. Jump on the nearest pipe (#227) and carefully move forward, towards the newly opened portal. Behind it there's another grav-switch (#228), the one that will let your approach the gate. Cross it to finally leave these headache-stimulating rooms.
Charge your energy gun and find a hole in the floor (#229). Use the tunnel to reach the wide platform (#230). Fight off all the robots and you'll see a portal that will let you end this level.