This chamber consists of two test both of which use the Repulsion and the Propulsion Gel. This is the test when Virgil reveals that he is not actually Cave Johnson.
Map: st_a2_once_upon.bsp
Title: Once Upon
Hazards
- Falling to Death
Walkthrough
Story Mode
Chamber Part 1
- Press the Pedestal Button to get a Cube.
- Place the Cube on the Heavy Duty Super-Colliding Super Button to open the door to the main part of the chamber.
- Place your first portal on the ceiling directly above the entrance.
- Enter the main part of the chamber.
- Place your second portal underneath the Repulsion Gel tube (underneath the grate).
- Stand on the Heavy Duty Super-Colliding Super Button linked to the Repulsion Gel tube to dispense Repulsion Gel through the portal.
- Move your second portal to any portal surface in the main part of the chamber, aside from those underneath grates and on the structure across the gap.
- Return to the entrance area.
- Move your first portal to the wall with the small ledge just above the entrance.
- Pick up the Cube.
- Jump up to your portal with the Repulsion Gel.
- Take the Cube through the portal to the main part of the chamber.
- Move your first portal underneath the Propulsion Gel tube (underneath the grate).
- Press the Pedestal Button to dispense Propulsion Gel.
- Move your second portal across to ceiling portal surfaces to create a runway of Propulsion Gel.
- Move your second portal to the end of the ceiling portal surfaces by the open side of the room.
- Move your first portal underneath the Repulsion Gel tube (underneath the grate).
- Stand on the Heavy Duty Super-Colliding Super Button linked to the Repulsion Gel tube to dispense Repulsion Gel through the portal.
- Stand near the open end of the room on the right side, where you can see the ceiling and wall portal surfaces on the upper level of the structure across the gap.
- Move one portal to the wall portal surface on the upper level of the structure.
- Move the other portal to the wall portal surface on the lower level of the structure.
- Pick up the Cube.
- Use the Gel runway to fling yourself through the portal to the exit.
- Place the Cube on the Heavy Duty Super-Colliding Super Button to open the exit door.
Chamber Part 2
- Press the Pedestal Button to get a Cube.
- Place the Cube on the Heavy Duty Super-Colliding Super Button to disable the larger Material Emancipation Grill.
- Walk through the smaller Material Emancipation Grill.
- Place your first portal underneath the Repulsion Gel.
- Place your second portal on the ceiling portal surface to the right of the Repulsion Gel to cover the slanted surface below it in Repulsion Gel.
- Walk past the Heavy Duty Super-Colliding Super Button opposite the Repulsion Gel.
- Move your second portal to the ceiling portal surface on the other side of the disabled Material Emancipation Grill to cover the slanted surface below it in Repulsion Gel.
- Walk back through the smaller Material Emancipation Grill.
- Place your first portal underneath the Vital Apparatus Vent.
- Place your second portal on the ceiling portal surface above the slanted surface with Repulsion Gel.
- Press the Pedestal Button to respawn the Cube.
- Quickly stand on the Heavy Duty Super-Colliding Super Button so the larger Material Emancipation Grill is disabled when the Cube flies through it.
- Walk back through the smaller Material Emancipation Grill.
- Place your first portal on the ceiling portal surface at the back of the chamber.
- Place your second portal on any other portal surface.
- Go through the portal to fall on the slanted Repulsion Gel surface and bounce to the exit area.
- Stand on the Heavy Duty Super-Colliding Super Button in the exit area to disable the Material Emancipation Grill blocking it off.
- Place your first portal under the Repulsion Gel.
- Place your second portal on the ceiling in the exit area, directly above the small ledge on the wall.
- Move your second portal to the wall above the small ledge.
- Jump up to your portal with the Repulsion Gel and go through.
- Move your first portal away from the Repulsion Gel so the Cube won't get covered in it.
- Pick up the Cube and take it through the portal.
- Place the Cube on the Heavy Duty Super-Colliding Super Button in the exit area to open the exit door.
Advanced Mode
Chamber Part 1
- Press the Pedestal Button to get a Cube.
- Place the Cube on the Heavy Duty Super-Colliding Super Button to open the door to the main part of the chamber.
- Place your first portal on the ceiling directly above the entrance.
- Enter the main part of the chamber.
- Place your second portal underneath the Repulsion Gel tube (underneath the grate).
- Stand on the Heavy Duty Super-Colliding Super Button linked to the Repulsion Gel tube to dispense Repulsion Gel through the portal.
- Move your second portal to any portal surface in the main part of the chamber, aside from those underneath grates and on the structure across the gap.
- Return to the entrance area.
- Move your first portal to the wall with the small ledge just above the entrance.
- Pick up the Cube.
- Jump up to your portal with the Repulsion Gel.
- Take the Cube through the portal to the main part of the chamber.
- Move your first portal underneath the Propulsion Gel tube (underneath the grate).
- Press the Pedestal Button to dispense Propulsion Gel.
- Move your second portal across to ceiling portal surfaces to create a runway of Propulsion Gel.
- Move your second portal to the end of the ceiling portal surfaces by the open side of the room.
- Move your first portal underneath the Repulsion Gel tube (underneath the grate).
- Place the Cube on the Heavy Duty Super-Colliding Super Button linked to the Repulsion Gel tube to dispense Repulsion Gel through the portal.
- Use the Gel runway to fling yourself to the structure across the gap.
- Move your second portal to the ceiling portal surface on the right side of the upper level of the structure (you can see it from the back of the structure).
- Wait a few seconds for Repulsion Gel to dispense on the upper level of the structure.
- Move your first portal to the wall portal surface on the left side of the lower level of the structure.
- Go through the portal to get to the upper level of the structure.
- Move your second portal to the wall portal surface on the upper level of the structure.
- Stand at the left side of the structure, where you can see the main part of the chamber.
- Move your first portal to any portal surface in the main part of the chamber, aside from those underneath grates.
- Jump up to your portal with the Repulsion Gel.
- Move your first portal to the wall portal surface on the lower level of the structure.
- Pick up the Cube.
- Use the Gel runway to fling yourself through the portal to the exit.
- Place the Cube on the Heavy Duty Super-Colliding Super Button to open the exit door.
Chamber Part 2
- Press the Pedestal Button to get a Cube.
- Place the Cube on the Heavy Duty Super-Colliding Super Button to disable the larger Material Emancipation Grill.
- Walk through the smaller Material Emancipation Grill.
- Place your first portal underneath the Repulsion Gel.
- Place your second portal on the ceiling portal surface to the right of the Repulsion Gel to cover the slanted surface below it in Repulsion Gel.
- Walk past the Heavy Duty Super-Colliding Super Button opposite the Repulsion Gel.
- Move your second portal to the ceiling portal surface on the other side of the disabled Material Emancipation Grill to cover the slanted surface below it in Repulsion Gel.
- Walk back through the smaller Material Emancipation Grill.
- Place your first portal underneath the Vital Apparatus Vent.
- Place your second portal on the ceiling portal surface above the slanted surface with Repulsion Gel.
- Press the Pedestal Button to respawn the Cube.
- Quickly stand on the Heavy Duty Super-Colliding Super Button so the larger Material Emancipation Grill is disabled when the Cube flies through it.
- Walk back through the smaller Material Emancipation Grill.
- Place your first portal on the ceiling portal surface at the back of the chamber.
- Place your second portal on any other portal surface.
- Go through the portal to fall on the slanted Repulsion Gel surface and bounce to the exit area.
- Stand on the Heavy Duty Super-Colliding Super Button in the exit area to disable the Material Emancipation Grill blocking it off.
- Place your first portal under the Repulsion Gel.
- Place your second portal on the ceiling in the exit area, directly above the small ledge on the wall.
- Move your second portal to the wall above the small ledge.
- Jump up to your portal with the Repulsion Gel and go through.
- Move your first portal away from the Repulsion Gel so the Cube won't get covered in it.
- Pick up the Cube and take it through the portal.
- Place the Cube on the Heavy Duty Super-Colliding Super Button in the exit area to open the exit door.
Video walkthough
Trivia
- The music played during this chamber is known as Adjacency. A version of Adjacency is also played on the menu screen when exiting a map in Chapter 3.
- The second part of this chamber is shown when entering a Chapter 2 map, zooming out over four shots, similar to Portal 2