Rappel Equipment

Navigate Test Chambers 13, 14, and 15 in Portal Reloaded using lasers, time portals, and reflector cubes. Complete all challenges with this detailed guide.

This guide covers Test Chambers 13, 14, and 15 of Portal Reloaded, focusing on the strategic use of lasers and time portals.

Test Chamber 13: Start by placing portals as shown in the image. Use a portal to redirect the laser sideways and a time portal to send it into the future. You may take some damage from the laser to travel into the future. Once in the future, rearrange the portals without affecting the present. Position them so the laser directly hits the target, then proceed through the exit door.

Test Chamber 14: Begin by taking a time portal to the present. Summon a reflector cube from the central switch and position it in the present as indicated. Use a portal to bring a laser through the first node, then use this to reflect the laser into the next two nodes. Travel to the future. Use portals to bring a laser into the present through the time portal, ensuring it passes through the node. Retrieve the reflector cube from the future and bring it to the present. Adjust the present reflector cube to hit all three nodes. If necessary, return to the future to retrieve the future reflector cube again and bring it to the present. Finally, position the future reflector cube to reflect the laser into the receiver, completing the chamber.

Test Chamber 15: Start by passing through the particle field to the left. Place a portal where the laser hits the wall and a time portal on the opposite wall. Travel through the time portal to the future to bypass the particle field. Proceed to the other side of the room and use another time portal to return to the present, now on the other side of the particle field. Place a new portal on the upper wall above the laser room so the laser hits the first receiver. Travel back to the future and place a portal on the small wall in the laser room to aim at the receiver. Return to the present; the laser should still be hitting the first receiver, powering an elevating platform. Stand on the platform and shoot a time portal behind the node. This will raise the platform, allowing you to summon a reflector cube. Place this cube on the lip above the second receiver. Travel to the future. Retrieve the future reflector cube and enter the laser room. Place a time portal to bring the future reflector cube into the present laser room, positioning it to reflect the laser into the second receiver through the node. To reach the other side of the particle field without going through it, use an existing portal or a time portal. Once in the present on the other side, climb the stairs and use a portal on the upper wall to hit the third receiver. Move the reflector cube onto the switch to complete the test chamber.