订阅以下载
The Lonely Companion

This behind the scenes is the 43rd level map, it requires the player to utilize high energy pellets, weighted storage cubes, conversion gel, a turret detector and some quick timing in order to proceed. High Energy Pellets are the primary hazards.

Walkthrough:
1. Once you enter the map into the first room, walk through the automatic glass doors and the conversion gel dropper will automatically activate.
2. Place the portal on the floor where the conversion gel is placed at and use the gel to cover the walls in order to get to the cube, it may take a couple of tries, but when you got it you should be able to portal yourself over to the cube.
3. Once landed at the coverless cube dropper area, place your previous portal that you came out of off on the wall where the conversation gel splatted it then grab the cube go through the portal and place it on the cube scale which will open the companion cube trap, and the floor back at the start, then go back through the glass doors and drop down onto the panel arm which will launch you and you will land on a turret which will either knock it over or stand on it, if you are standing on it and it is shooting you quickly grab it using your use key and turn it around, then set it down facing away from you. Then as you get close to the victory lift to the 2nd room, a laser field automatically activates and the angle panel opens to reveal a floor portable surface, place a portal on that portable surface and the other portal on the wall on the opposite side of the laser field and go through it and the victory lift will automatically lift you up to the 2nd room.
4. This 2nd part of the chamber can be challenging, as you rose to the 2nd room pass the connected fizzler of the accessible cube button that deactivates it Once you pass the fizzler your portals will be reset, and the announcer will come on and say that you have just passed through the fizzler which vaporizes any unauthorized object(except lasers and energy pellets) that touches it.
5. In the 2nd room when you enter the room the orb launcher will automatically activate and launch an energy orb which will bounce off the portable surface it hits which will leave a scorch mark on the portable surface. A Cube will also spawn going down the vactube and into the attached cube dropper. Quickly get on the player button to open the door to an inaccessible pedestal button area, then step off the button and quicly place a portal on the portable surface before the door closes all the way, then turn around and put the other portal on the portable surface in the 2nd room that doesnt have a scorch mark then go through the portal and press the pedestal button.
6. Quickly go back through the portal and place a portal on the now flipped panel and quickly place the other one on the scorch mark and watch the pellet go through into the pellet catcher which will activate the cube dropper which will drop the cube, grab the cube and place it on the accessible cube button, which will deactivate the fizzler and allow you to keep your portals in place, then go down back into the end of the 1st room place a portal through the laser field onto the portable surface where the panel is already opened there, then go back on the victory lift and go through the portal, grab the turret and place it on the turret detector facing away from you and the cube, this will open another portable surface below the infinite pellet catcher.
7. Place a portal on that now portable floor and place the other one on the scorch mark and wait for the pellet to reach the catcher. Once caught, the glass door where the cube button is will open giving you access it.
8. Grab the cube from the button that kept the fizzler activated then put it on the other cube button to open the exit door, then go through the custom exit/entrance corridor and the exit door will close and the entrance door will open into the area where an exit door is. where you can observe the very first started from.
9. Getting close to the exit door will close, and if you look up above, you will notice that the ceiling has opened up, revealing a portable surface. Place a portal on there, then go back through the entrance door back into the exit/entrance corridor and you will noticed another portal surface that opened up, place the other portal on there and go through it, this will close the ceiling and flip panel back fizzling the portal you entered from, and the entrance door and to the right a glass door has opened up to the 3rd room the alternate route.
10. Go through the glass doors and they were close behind you. Pressing the pedestal button, but no cube comes out of the coverless cube dropper, go on the panel arm to launch yourself onto a portable surface on the raised floor, the launcher will automatically activate. Put a portal on the portable surface on the floor where you landed on then place the other one on the wall portable surface and watch the pellet go into the catcher which will unlock the dropper. Then press the pedestal button again after dropping back down to the lowered floor to drop a cube. Grab the cube and go back on the panel arm, launching back onto the same block that is now non-portable, then place the cube on the cube button, this disables a laser field allowing you to activate a switch to open another glass door which gives you access to the 2nd cube button. Then take the cube off the button and put it on the button to open the exit door which is also a glass door, passing through this through the fizzler which will fizzler your portals and the door will close behind you, then jump into the exit vactube to end the map. As you ride the tube, you can see the rooms you have completed abnd passed and can also see the companion cube pass its trap behind the glass, and after passing all the rooms you will end the map while riding the tube.

Trapping Yourself/softlock:
You can trap yourself in the 2nd room if you have accidentally destroyed the required turret from the first room to activate the turret detector in the 2nd room which connects to the flip panel below the infinite pellet catcher that flips the panel over to reveal a portable surface. After the first step quickly stepping on and off the player button and quicly shoot a portal on the portal surface before it closes all the way, then place the other portal on the portal surface and go through the portal into the room and press a button to flip an panel to reveal a portable surface and quickly put a portal on the portal surface side of the flip panel and the other on the and surface where the scorch mark is and watch it go through the portal before the pedestal button deactivates, once it's reaches the timed catcher. Grab the cube and put it on the open space below the green light strip. Then go over to the pedestal button you first saw when entering the 2nd room and press it, this will open the floor dropping the cube, when the button resets the floor closes back up, and the exit door will automatically open.

Hazards:
Getting hit by a High Energy Pellet
Companion Cube Trap
Turrets
Laser Field

Mechanics:
Weighted Storage Cube
High Energy Pellets (launcher & catcher)
Cube Scales
Pedestal Button
Player Button
Turret Detector
Portals
Faith Plate
Victory Lift

Notice: This level has a custom exit which is in the last room where the catapult panel arm is, it is from the the alternate route. You can see the panel arm on the monitor screen when it appears as it cycles through the other cameras, since the room does have cameras.