Portal/Chamber 11: Difference between revisions

When you begin practicing this chamber for a speedrun, try placing the blue portal high over the door to the pellet emitter room and jumping through the orange portal to land on the platform with the dual portal gun. If you're one of the people who can do this, you can bypass a significant section of the puzzle. If you're not, then, once again, you're stuck with solving the puzzle the normal way in the minimum amount of time. The instructions below include an optional and difficult jump that can significantly cut down your time.

When the chamber lock doors open, don't waste any time walking around; place the blue portal on the floor just outside and jump through. The orange portal is positioned where you need to go and the jump and fall will give you a boost forwards. Go directly to the button and press it. Then back up, watching the door open opposite. Shoot a new blue portal through the door on the far wall and either keep backing up or turn around, but ''get back through the orange portal before it closes''. If you can't do this, you'll have to wait a long time for the dual portal gun to cycle around again, so practice until you've got this down.

Now you're in the pellet emitter room. You will probably have just missed the pellet's impact with the wall at the top of the steps near the door. This is good; shoot the blue portal over the scorch mark to catch it the next time. If you're really quick, you might arrive just as the pellet approaches the wall. In this case, ''don't shoot''! Let the pellet bounce first. If you place the blue portal too soon, the orange portal may not have been moved from where you were and the pellet will pass uselessly across the width of the main chamber. Once you have the blue portal in place, you have a short breathing space, so go to the windows and watch as the pellet travels the length of the main chamber, into the receiver, starting the moving platform.

When the platform nears the other end of its travel, go up to a wall, place the blue portal there and step through onto the platform when it is in position. Ride the platform to the dual portal gun and take it as in the normal walkthrough. Unless you're going to try the death-defying '''jump''', described below, there is no need to hurry over pressing the pedestal button and placing the portal on the other side of the exit room door because your time will be set by the movement of the platform. If you are going to try the jump, then jump from the moving platform to the portal gun as soon as you can, press that button as it rises and shoot the blue portal through the door, high up and as far right as possible to minimize the walk to the exit chamberlock.

Now, for the '''jump''', back up and take a position on the solid platform far back from the wall of the pellet emitter room (but, don't fall off). You could usefully quicksave at this point. Place the orange portal on the wall ahead of you and as low down as possible. With all haste, move forward and at the absolute last possible instant ''jump'' towards the orange portal. If all is well, you will come out in the exit room, so strafe and turn left to get into the chamberlock. If all is not well, of course, you'll be dead. If you die more times than not, maybe you should not try this jump in your speedrun and just wait for the moving platform as in the Walkthrough, above.  If you usually make it, but occasionally fail, then it's worth a try as long as you quicksave as mentioned above. If you always make it, then maybe you're not a mere mortal after all.

Using the jump, you should get from the opening of the entry chamberlock door to the exit chamberlock in fifty four seconds. If you wait for the moving platform, your time will be well over a minute. With respect to the overall speedrun, try to have the dual portal gun in hand by the ten minute mark.