Off To Kill Emdea

Test Chamber 13: Place portals as shown in the image to redirect the laser. Use a time portal to move the laser into the future. Travel through the time portal. Rearrange portals in the future to direct the laser into the target and exit the chamber.

Test Chamber 14: Travel to the present via a time portal. Summon a reflector cube and position it to redirect the laser through the first node. Travel to the future. Use portals to bring the 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 via a time portal. Position the present reflector cube to hit all three nodes. If necessary, return to the future to retrieve the future reflector cube and bring it to the present again. Finally, position the future reflector cube to reflect the laser into the receiver, completing the chamber.

Test Chamber 15: Go 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 the future to bypass the particle field. Return to the present using another time portal to be on the other side. Place a new portal to direct the laser to the first receiver. Travel to the future and place a portal on the small wall to aim at the receiver. Return to the present. Stand on the elevating platform that powers up and place 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. Retrieve the future reflector cube and bring it to the present via a time portal, positioning it to direct the laser to the second receiver through the node. To proceed, get to the other side of the particle field in the present. Climb the stairs and use a portal on the upper wall to hit the third receiver. Move the reflector cube onto the switch to complete the chamber.