EMP Device

Detailed walkthrough for Portal Reloaded's Laser challenges in Test Chambers 13, 14, and 15. Learn how to use portals and time portals to solve complex laser puzzles.

This section covers Test Chambers 13, 14, and 15, focusing on the use of lasers, portals, and time portals to solve 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 portals without affecting the present. Position portals so the laser directly hits the target, then proceed through the door.

Test Chamber 14

1. Begin by taking a time portal to the present.
2. Summon a reflector cube from the central switch and position it in the present as indicated.
3. Use a portal to direct a laser through the first node, then use this to reflect the laser into the next two nodes.
4. Travel to the future.
5. Use portals to bring a laser into the present through the time portal, ensuring it passes through the node.
6. Retrieve the reflector cube from the future and bring it into the present via the time portal.
7. Adjust the present reflector cube to hit all three nodes. If necessary, return to the future to retrieve and reposition the future reflector cube.
8. Place the future reflector cube at the end of the nodes to reflect the laser into the receiver, completing the chamber.

Test Chamber 15

1. Enter the chamber and proceed through the particle field to the left.
2. Place a portal where the laser hits the wall and a time portal on the opposite wall.
3. Travel through the time portal to the future to bypass the particle field.
4. On the other side, use another time portal to return to the present, now positioned beyond the particle field.
5. Place a new portal on the upper wall above the laser room so the laser hits the first receiver.
6. Travel back to the future. Place a portal on the small wall in the laser room to shoot the receiver.
7. Return to the present. The laser should be hitting the first receiver, powering an elevating platform.
8. Stand on the platform and place a time portal behind the node to raise the platform further, allowing you to summon a reflector cube.
9. Place this reflector cube on the lip above the second receiver.
10. Travel to the future. Pick up the future reflector cube and bring it into the laser room in the present using another time portal.
11. Position the present reflector cube to reflect the laser into the second receiver through the node.
12. To bypass the particle field, use a portal on the other side or a time portal. Ensure you are in the present on the other side of the particle field.
13. Climb the stairs and use a portal on the upper wall to hit the third receiver.
14. Move the reflector cube onto the switch to complete the test chamber.