![]() ![]() Trace a path backwards from the receiver, bouncing off the platforms as a pellet would, and you will discover that the pellet needs to be coming straight out of the wall next to the three angled platforms (on that same wall). Notice the additional angled platforms, preventing the normal method. Now that you are with the pellet launcher and receiver, fling yourself over to the other side as normal. As you fall through, put another blue portal under you to fly back through to the main room and maneuver over to the next section. Another method which is more guaranteed is to, after placing the orange portal similarly, place a blue portal on the ceiling of the side room above the low floor. If you jump off the ledge and into the portal, pressing the necessary direction, you can manage to come up with just enough momentum to walk through the field into the next section. Take note of which direction the field is. Now place a blue portal on the floor below you. Place a blue portal on or below the camera, and come through to land on the side room’s ledge. Place an orange portal sideways as close to the emancipation field as possible. Room 3 has no portalable walls in the main room, and no staircase in the side room. The pellet moves a little slower, which requires you to place the next portals by the time the pellet hits the wall the first time, or else it will disappear and you will have to start this room again. Room 2 has an additional forcefield, requiring a 6-portal combination. You can do this on the first try, but if you miss, you can continue to fall through infinitely until you do manage to place a portal correctly. You need to shoot a portal (the same color as your ceiling portal) as you fall so that you can fling over to the other side. Place a portal on the ceiling and the floor. Room 1 has a lot fewer portalable surfaces. This opens the fourth gate.In the advanced chamber, most of the puzzles have been made more challenging, requiring alternate methods to solve them After passing through the third gate, remove the time portal so the cube keeps floating and presses against the big button on the ceiling. It’s done in this order because changing the portals in the past will change where they are in the future, but not the other way around. Finish by creating a new time portal on the upper right side of the room, so the light bridge from the future enters the present and prevents the cube from rising any higher. Shoot the ‘receiving end’ portal on the surface in the upper left corner of the wall, and then return to the present. The player needs to get the cube to stop rising so it stays in place and redirects the laser into a reticle, so go to the future and fire a new portal at the light bridge there. This will cause it to gradually float to the ceiling where the laser is. Start by shooting one portal at the end surface of the excursion funnel, then another underneath the cube that was just used to redirect the laser. This section can be difficult, so feel free to create a save file before attempting this part of the puzzle. Create it, then get ready for some fast-paced portal placing. In between the second and third gate, there’s a surface only for time portals that are opened by pressing a button. Now that the first gate is open, head there and create a new portal so the laser goes through the present cube once again, thus opening the second gate. It’s important that it’s done out of order like this, because the moment the present cube is rearranged, the future one will vanish. Create a new portal in the area underneath the laser gates and use the future cube to redirect the laser into the reticle with the number one dice block. This will disable the second laser gate, but what about the first? Another laser cube is needed, so head to the future and grab the future version of the same cube and bring it back to the present. Then, use the cube to redirect the laser into the reticle next to the symbol with the two dice. Fire a new portal into the portal surface near the ceiling where the laser is firing and then another one on the surface right of the stairs. This special cube can redirect thermal discouragement beams or the red lasers. To begin, press the button on the left side of the room to drop a cube into the excursion funnel and then fire one portal where the funnel ends and another on the ground so the player can grab the cube. ![]()
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