Chapter 3: The Return
Chambers 01 & 02
Chamber 1
First you will need to place a blue portal directly above the jumping pad, you will need to head to the orange portal, it is located in front of you. It is a little bit hidden near the black walls. Using the jumping pad, you will need to use the jump pad four times. Once you are on the upper level, you will need to shoot a portal on the tilted platform which is located on the right side of the laser. Using the jump pad again, you will jump to a switch. Pressing this switch will release a cube which will pop out on the other side. You will need to shoot an orange portal on the other titled platform, use it to get down to the jumping pad. Using the jumping pad again to grab the cube. You will need to carry the cube and line it up with the shorter wall on the left side. Facing the wall, you will need to fire another orange portal at the third tilted platform. Make your way back to the jumping pad, this will take you to the top level. You will then need to place both of your portals on either end of the short wall. This will allow the laser to pass by. This will unlock the door.
Chamber 2
Once you have made it to the next room, you will need to turn around and shoot a blue portal above the entrance of the door, head over the pit and shoot your orange portal below you. Head through the orange portal, here you will land on a edge with a cube. Picking up the cube you will need to make your way back to the main level. You will be able to get to the second floor by using the jump pads. Put the cube onto the path of the laser. Once you have done that, you will need to make your way to the third floor via the jump pad.
On the right hand side, you will need to press the button to give you a reflection cube. You will need to shoot a blue portal onto the wall to the left hand side. This will align with the laser sensor nodes. Once you have done that, you will need to head back to the second level. You will need to replace the normal cube with the reflection cube. Once you have done that, you will need to shoot an orange portal on the far wall in front of you. Picking up the heavy cube, head on over to the jump pad and place the cube onto the button. This will bring the elevator down.
Chambers 03 to 09
Chamber 3
Shooting a blue portal at the end of the light bridge, you will then need to shoot an orange portal on the other side of the room. You will need to make your way through the light bridge, this will take you to the button. You will need to push the switch using one of the heavy cubes. Heading back to the other end of the bridge, you will need to shoot an orange portal at the middle wall. Go through your blue portal. This will lead you onto the middle bridge. Once you have come to the dead end, you will need to shoot an orange portal on the wall to the left. Keep heading down, you will then need to shoot an orange portal on the floor on the right. Doing this will form a light bridge, this will catch the falling cube.
Catch the heavy cube and move through the portal located behind you. When you have made it through the portal, you will need to place an orange portal on the right hand wall, this will bring the light bridge to the button. Head through your blue portal and go across the bridge. You will need to push the heavy cube off the button and shoot an orange portal below it. You will also need to shoot another orange portal near the door where the switch is. This will lead you to the elevator.
Chamber 4
First you will need to place an orange portal above the light bridge, you will also need to shoot a blue portal on the wall in front of the entrance. Make your way through the blue portal, when you are through the portal, you will need to place another orange portal at the end of the light bridge. Make your way through the orange portal. This portal will take you back to the main lobby. Shooting your blue portal at the tilted wall on the left hand side and push the switch. This will cause the cube to drop, it will then land on the light bridge. Pick up the cube and take it through the blue portal. Head through the orange portal again, turning yourself around, you will need to fire another blue portal on the left hand wall. As you can see, the light bridge will be pointing towards the exit. Picking up the heavy cube head through the portal and put it on the button. This will open the door to the elevator.
Chamber 5
Straight in front of you there will be turret. Pushing it or knock it will stop it from working. Shooting your blue portal at the wall in front of you, you will then need to quickly go around the corner. Watching out for the turret’s lasers!. Shooting an orange portal behind the turret. Head through the blue portal and take down the turret. Make your way around the next corner, you will need to shoot an orange portal below the turret to take down the enemy. Keep going forward until you come to a room where there are two turrets and three cubes. Shoot a portal above the turret. You will need to do the same with the turret in the next section. Placing your orange portal on the wall to the left. This portal should be above the turret. Dropping your cube through the orange portal to take out this enemy. Shoot another blue portal above the last turret, once you have taken out all the enemies, you will need to pick up the cube and place it on the button.
Chamber 6
Pressing forward, you will need to get into the lift and head to the main lobby. Picking up the reflection cube and put it in front of the middle and right nodes. Shooting a blue portal behind the right node. Use your orange portal behind the left node. The lasers will unlock door to the elevator.
Chamber 7
Shooting your blue portal at the end of the light bridge, shooting your orange portal in front of the single turret. Go into the orange portal and push over the four turrets. Shooting a new blue portal you will be able to push over the single turret. Re-shoot your blue portal and go across the light bridge and head into the next room.
Once you have made it into the next room, you will need to place an orange on the pillar. This will push over the turrets. Once you have pushed over the turrets, you will need to jump onto the jump pads. Shoot your orange portal above you. Use the jump pads to get to the top level, dropping yourself down into the hole, you will need to take out the four turrets. Picking up the heavy cube carry it to the main floor. Put the orange portal on the pillar in front of you. Remember to keep out of the way of the next turrets. You will need to shoot an orange portal above the turrets. You will quickly need to move yourself out of the way again, shooting a blue portal under the turret to take out the remaining enemies.
Chamber 8
Shoot your orange portal below the laser and your blue portal will need to be in front of the turrets. Move yourself to stand on the switch, this will let the laser take out the first three turrets. Pick up a cube and put it on the button. Picking up reflection cube, you will need to use it to take down the next three turrets. One you have done that, you will need to use the same cube to align the lasers lights with the sensor node. This will unlock the door.
Chamber 9
First you will need to shoot your blue portal to the end of the light bridge and shoot your orange portal on the right hand wall. Head into the orange portal until you can see the laser. Turning yourself around, you will need to shoot an orange portal onto the wall on the right hand side. Picking up the cube and head into your blue portal. Drop your cube in front of the laser. This will block the node. Go and stand on the lift. You will need to place another portal to interrupt the light bridge and place the cube on the button. If you have put everything in the right order the elevator door will open.
Chapter 4: The Surprise
All Chambers
Let’s do these last four randomly numbered chambers.
Chamber 1
You will quickly need to get into some cover. You will be able to dot his behind the light bridge. Shoot your orange portal at the white wall on the other side of the room. You will quickly need to move into the enclave which is located on the left hand side, you will need to fire your blue portal into the enclave. You will also need to fire another blue portal at the end of the light bridge. You will then need to fire your orange portal in front of the reflection cube. To the right there will be a switch, press it, if you have placed the bridge in the right place it will bring the cubes down into the main area. You will need to shoot another orange portal behind you. This portal will take you back to the main area. Picking up two cubes, you will need to head through the orange portal. The light bridge will help protect you. Put one of the cubes under the laser, this will make the laser hit the two nodes. You will need to place the second cube near the turret. This will make the turret explode. You will need to move the cube to the far right ledge. Put it in line with the three laser nodes. Finally you will nee to shoot a portal on the left hand wall to bring the bridge closer to the door.
Chamber 2
Dropping yourself down onto the main floor, you will need to place a blue portal on the ceiling, it will need to be above the reflective cube. Shoot your orange portal on the ground, once you have drop that. Drop yourself through and pick up your first cube. Jumping back down, you will need to shoot your blue portal in the small enclave, the laser will be shooting from this enclave. You will need to put on of the cubes in the enclave, this will reflect the laser beams into the laser node. Making your way back to the bottom, you will need to shoot a portal above the jumping pad. You will need to place the orange cube into the orange portal and it will bounce. Shooting your blue portal on the wall to the right. This will throw the cube into the second laser node. You will need to repeat this sequence, but instead of placing the cube through the orange portal, you will need to place the orange portal and the blue portal on the same wall. This will allow the cube to reach the laser node. You will need to place the cube to it hits the third and final laser node.
Making your way through the orange portal, you will need to jump on the jump pad. This time you will need to shoot a blue portal on the wall near the entrance. This will push over the third reflection cube. Shooting your blue portal at the entrance, dropping yourself down the orange portal you will need to pick the the cube and use it to take down those enemy turrets. Once you have taken down the turrets, use the cube to take out the last node. Heading back down to the bottom, you will need to shoot your portal above the jump pad. Jumping on the jump pad, you will need to fire a blue portal at the far right hand corer of the main entrance. If you have put this in the correct place you will land near the main entrance.
Chamber 3
shooting your blue at the pillar located to the right, this portal will need to be facing the three nodes. Making your way back to the main area, you will need to shoot your orange portal on the wall where the laser beams are. Making your next two reflection cubes catch the laser beams and shoot it through the orange portal. Knocking the nodes located on the right hand side and in the middle. Ones you have activated all three nodes the lift will be activated.
Chamber 4
Shooting your blue portal on the right hand wall you will then need to shoot your orange portal on the orange portal at the above panel. This will allow the box to drop into onto the light bridge. Following Wheatley, you will need to be quick as there is poisonous gas flooding the area. Quickly head over over the catwalk and over the light bridge.
Chamber 5
You will keep following Wheatly, watch out as there are enemies. You will need to take cover! Sneaking your way behind the three turrets you will need to bring them down to clear out the room. Shooting an orange portal on the wall to the right. Heading to the left you will need to shoot a blue portal on the pillar that has a small hole. Make your way through the portal and follow Wheatley.