Multiplayer Modes & Strategies

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

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

Test Chamber 13:

1. Place portals as shown in the image.
2. Use a portal to move the laser sideways.
3. Use a time portal to move the laser into the future. You may take damage to do this.
4. Once in the future, rearrange portals without affecting the present.
5. Position portals so the laser hits the target.
6. Proceed through the door.

Test Chamber 14:

1. Start by taking a time portal to the present.
2. Summon a reflector cube from the center switch and position it as shown.
3. Use a portal to direct a laser through the first node, then use the reflector cube to direct it 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 to the present via a time portal.
7. Ensure the present reflector cube hits all three nodes; adjust as necessary.
8. If the future reflector cube was moved, travel back to the future to retrieve it and bring it to the present.
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:

1. Pass 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 reach 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 so the laser hits the first receiver.
6. Travel to the future and 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.
9. Summon a reflector cube and place it on the lip above the second receiver.
10. Travel to the future.
11. Retrieve the future reflector cube and run into the laser room.
12. Place a time portal in the laser room to bring the future reflector cube to the present.
13. Position the cube to reflect the laser to the second receiver through the node.
14. Reach the other side of the particle field without going through it (use existing portals or a time portal). You need to be in the present on the other side.
15. Climb the stairs and use a portal on the upper wall to hit the third receiver.
16. Move the reflector cube onto the switch to complete the chamber.