The Way Of Woo — LASERS Walkthrough

Test Chamber 13: Place portals as shown in the image to use a portal to move the laser sideways and a time portal to move the laser into the future. Travel through the time portal. Rearrange portals in the future so the laser goes directly into the target to exit the chamber.

Test Chamber 14: Travel to the present via a time portal. Summon a reflector cube and position it in the present as shown. Use a portal to bring a laser through the first node and reflect it into the next two nodes. Travel to the future. Use portals to bring a laser into the present through the time portal, ensuring it goes through the node. Retrieve the reflector cube from the future and bring it to the present. Adjust the present reflector cube to hit all three nodes. Travel back to the future to retrieve the future reflector cube if needed. Place the future reflector cube at the end of the nodes to reflect the laser into the receiver and complete the chamber.

Test Chamber 15: Start by going through the particle field to the left. Place a portal where the laser hits the wall and a time portal on the other wall. Travel through the time portal to the future to bypass the particle field. Head to the other side 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 to direct the laser to the first receiver. Travel to the future and place a portal on the small wall in the laser room to shoot at the receiver. Return to the present. An elevating platform near the switch will power up. Stand on it and place a time portal behind the node to raise the platform further, allowing you to summon a reflector cube. Place this reflector cube on the lip above the second receiver. Travel to the future. Retrieve the future reflector cube and run into the laser room. Place another time portal in the laser room to bring the future reflector cube into the present. Position it to reflect the laser to the second receiver through the node. To proceed, get to the other side of the particle field without going through it (use an existing portal or a time portal). 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 chamber.