VII. Troubleshooting & FAQ: Overcoming Obstacles

Navigate challenging LASER puzzles in Portal Reloaded. This guide provides solutions and answers to common issues encountered in Test Chambers 13, 14, and 15.

Test Chamber 13 Walkthrough:

1. Place portals as shown in the image.
2. Use a portal to move the laser sideways and a time portal to move it into the future.
3. You can take some damage from the laser to travel into the future.
4. Once in the future, rearrange portals without affecting the present.
5. Position portals so the laser goes directly into the target to exit the chamber.

Test Chamber 14 Walkthrough:

1. Start by taking a time portal to the present.
2. Summon a reflector cube from the switch in the center and position it in the present as shown.
3. Use a portal to bring 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. Pick up the reflector cube from the future and move it through the time portal to bring it into the present.
7. Ensure the reflector cube in the present hits all three nodes; adjust as necessary.
8. If you moved the cube, travel back to the future to retrieve it and bring it to the present again.
9. Place the future reflector cube at the end of the nodes to reflect the laser into the receiver, completing the chamber.

Test Chamber 15 Walkthrough:

1. Go through the particle field to the left.
2. Shoot a portal where the laser hits the wall and place a time portal on the other wall.
3. Travel through the time portal to move into the future, bypassing the particle field.
4. 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.
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 and place a portal on the small wall in the laser room to shoot at the receiver.
7. Return to the present. The laser should be hitting the first receiver, powering up an elevating platform near the switch.
8. Stand on the platform and shoot a time portal behind the node to raise the platform further, allowing you to summon a reflector cube.
9. Place the reflector cube on the lip above the second receiver.
10. Travel into the future. Pick up the future reflector cube and run into the laser room.
11. Place another time portal in the laser room to bring the future reflector cube into the present.
12. Position it to reflect the laser to the second receiver through the node.
13. To get to the other side of the particle field without going through it, use a portal on the other side or a time portal. You need to be in the present on the other side.
14. Climb the stairs and use a portal on the upper wall to hit the third receiver.
15. Move the reflector cube onto the switch to complete the test chamber.

FAQ/Clarifications from Comments:

Q: The explanation for Test Chamber 15, specifically the second to last and last images, seems contradictory regarding the laser's path through a cube versus a portal.

A: The user clarifies that the redirection cube is moved onto the switch *before* firing the portal to hit the upper receiver. Grabbing the cube destroys the future cube, allowing the laser to pass through its original blocking point.