Where are the portals in test chamber 14? Portal Test Chamber 14 (Bonus) Portal Test Chamber 15 (Bonus) Portal Test Chamber 16 (Bonus) Portal Test Chamber 17 (Bonus) Portal Test Chamber 18 (Bonus) Portal: Still Alivebonus chambers Portal: Still Alive Test Chamber 1 (Bonus) Portal: Still Alive Test Chamber 2 (Bonus) Portal: Still Alive Test Chamber 3 (Bonus) How do you beat chamber 18 in Portal? Which is the best portal chamber to use? Turn right and place a portal on the ceiling.You should automatically drop through for the second time and then land on the other side of the Goo.Go back in the hall and the shoot a portal on the floor at the end of the hallway.When the High Energy Pellet disappears, shoot the other portal on the wall from where the Pellet used to bounce off.Go stand in front of the glass and turn around.Shoot the other portal on the wall near you and go through it.Walk to the end of the small hallway and stop before the red beam.Go through the door and knock over the turret and wait for it to shut down.Go at the end of the hallway and wait for the door to open.