Concealed Weapons

Detailed walkthrough for Portal Reloaded's 'Lasers' section, covering Test Chambers 13, 14, and 15 with step-by-step instructions and tips for using lasers and time portals.

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

Test Chamber 13

Begin 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 may take some damage from the laser to ensure you travel into the future. Once in the future, rearrange portals without affecting the present setup. 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 central switch 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. 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. The reflector cube in the present should now hit all three nodes; adjust its position if necessary. If you moved the future reflector cube, 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

This chamber requires frequent use of the time portal. Start 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. Proceed to the other side of the room and use another time portal to return to the present, now on the far 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 aim at the receiver. Return to the present. The laser should still be hitting the upper receiver, powering an elevating platform. Stand on this platform and shoot a time portal behind the node to raise the platform further, allowing you to summon a reflector cube. Place this cube on the lip above the second receiver. Travel to the future and pick up the future reflector cube. Return to the present by placing a time portal in the laser room so the future reflector cube is brought into the present laser room. Position it to reflect the laser into the second receiver through the node. Now, you need to reach the other side of the particle field without passing through it. Use an existing portal or a time portal to get to the present on the other side. Climb the stairs and place a portal on the upper wall to hit the third receiver. Finally, move the reflector cube onto the switch to complete the test chamber.