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Navigate Test Chambers 13, 14, and 15 in Portal Reloaded using this comprehensive guide. Learn how to manipulate lasers, time portals, and reflector cubes to solve complex puzzles.

This guide covers Test Chambers 13, 14, and 15 of Portal Reloaded, focusing on the effective use of lasers, time portals, and reflector cubes to solve the puzzles.

Test Chamber 13

Start by placing portals as shown in the image. Use a portal to move 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 goes directly into the target to complete the chamber.

Test Chamber 14

First, travel to the present using a time portal. Summon a reflector cube from the switch in the center and position it in the present as shown. Use a portal to bring a laser through the first node, then use the reflector cube to direct it 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 via a time portal. Adjust the present reflector cube to hit all three nodes. If necessary, travel back to the future to retrieve and reposition the future reflector cube. Finally, place the future reflector cube at the end of the nodes to reflect the laser into the receiver, completing the chamber.

Test Chamber 15

Begin 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 reach the future, bypassing the particle field. Head 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 shoot the receiver. Return to the present; the laser should still be hitting the first receiver, powering an elevating platform. Stand on the platform and place a time portal behind the node to raise it further, allowing you to summon a reflector cube. Place this cube on the lip above the second receiver. Travel to the future and bring the future reflector cube into the laser room in the present by placing a time portal. Position 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 a 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. Finally, move the reflector cube onto the switch to complete the test chamber.