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* When you see the next turret, aim a portal underneath it, then use floor-to-floor to get where it was. | * When you see the next turret, aim a portal underneath it, then use floor-to-floor to get where it was. | ||
* Aim your portal at the floor way up at the far end of the hall and floor-to-floor again. Ideally you want to be a bit in front of the two cubes, with a clear view of the corridor between the two turrets. | * Aim your portal at the floor way up at the far end of the hall and floor-to-floor again. Ideally you want to be a bit in front of the two cubes, with a clear view of the corridor between the two turrets. | ||
* Put a portal on any convenient wall and shoot the other under the boxes to drop them through onto the portal-friendly tiles. This makes them a bit easier to manipulate. | * Put a portal high up on any convenient wall and shoot the other under the boxes to drop them through onto the portal-friendly tiles. This makes them a bit easier to manipulate. | ||
* Use your portals to place the cubes in between the two turrets, with a gap between them big enough for you to stand in. Fiddle with their positioning until they are breaking the turret detector beams. | * Use your portals to place the cubes in between the two turrets, with a gap between them big enough for you to stand in. Fiddle with their positioning until they are breaking the turret detector beams. | ||
* Portal yourself into the gap between the cubes and crouch. From here, take out each of the turrets in turn by dropping the cubes on them. | * Portal yourself into the gap between the cubes and crouch. From here, take out each of the turrets in turn by dropping the cubes on them. | ||
* Floor-to-floor up to the end of the friendly tiles where you can see into the side room with all the cubes in it. Floor-to-floor again to get into the room. | * Floor-to-floor up to the end of the friendly tiles where you can see into the side room with all the cubes in it. Floor-to-floor again to get into the room. | ||
* Use your portals to | * Use your portals to move one or two boxes into the doorway, then portal yourself right behind them and crouch. Drop cubes onto the turrets. | ||
* Drop some more cubes out onto the portal-friendly tiles where you | * Drop some more cubes out onto the portal-friendly tiles where you'll be able to use them, then go out yourself. Put a cube in front of the next doorway and crouch behind it. | ||
* Set a portal on the wall behind the turret in the far left corner and send a cube through to knock it over. | * Set a portal on the wall behind the turret in the far left corner and send a cube through to knock it over. | ||
* Shoot a portal underneath the turret on the near right. | * Shoot a portal underneath the turret on the near right. | ||
* If you have another cube on friendly ground, send it through to somewhere in sight of the last turret and position yourself behind it. | * If you have another cube on friendly ground, send it through to somewhere in sight of the last turret and position yourself behind it. | ||
* Kill the third turret by firing a portal at the security camera behind it. | * Kill the third turret by firing a portal at the security camera behind it. | ||
* Lift a cube and set it on the button. | * Lift a cube and set it on the button. If you're in sight of the next turret, shoot a portal under it. | ||
* Aim your portal through the two fences and go through. | * Aim your portal through the two fences and go through. | ||
* Stick a portal on the floor and chuck the last turret into it, then use portals to get right up to the Material Emancipation Grill before run-jumping to the Chamberlock. | * Stick a portal on the floor and chuck the last turret into it, then use portals to get right up to the Material Emancipation Grill before run-jumping to the Chamberlock. | ||
=== Time === | === Time === | ||
* You can't do anything in the first 20 seconds while GLaDOS is talking - except | * You can't do anything in the first 20 seconds while GLaDOS is talking - except run up to the door and get your exit portal onto the ceiling ready for the turrets you're going to send through. | ||
* As soon as the announcement is over, shoot a portal under the turret and get running. | * As soon as the announcement is over, shoot a portal under the turret and get running. | ||
* As you come in sight of the | * As you come in sight of the next turret, shoot a portal anywhere on the wall behind it and the other onto the wall in front of you. Keep running. | ||
* Shoot your next portal up the hall and the other onto the floor and run on through. You want to be near the cubes. | * Shoot your next portal up the hall and the other onto the floor and run on through. You want to be near the cubes. | ||
* Grab a cube and run for the nearer of the two turrets (on the left) then run on down the hall for the other one, still holding your cube. | * Grab a cube and run for the nearer of the two turrets (on the left) then run on down the hall for the other one, still holding your cube. |
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