Cubes

Navigate Test Chambers 13, 14, and 15 of Portal Reloaded using lasers, time portals, and reflector cubes. Complete challenging puzzles with this detailed walkthrough.

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

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 can 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, allowing you to proceed through the door.

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 indicated. Use a portal to direct a laser through the first node, then use this to reflect the laser into the next two nodes. Travel to the future.

In the future, use portals to bring a laser into the present through the time portal, ensuring it passes through the designated node. Retrieve the reflector cube from the future and bring it into the present via a time portal. Position the reflector cube in the present to hit all three nodes. Adjust as necessary. If the cube was moved, return to the future to bring it back to the present.

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 going 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. 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 in the laser room to shoot at the receiver. Return to the present. The laser should still be hitting the first receiver, powering up an elevating platform. Stand on this platform and shoot a time portal behind the node.

This will raise your platform, allowing you to summon a reflector cube. Place this cube on the lip above the second receiver. Travel to the future by placing your time portal conveniently. Retrieve the future reflector cube and bring it into the present laser room using another 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 on the other side or a time portal. Ensure you are in the present on the far 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.