Portal Stories: Mel Under Bounce

This chamber has the Repulsion Gel and the Cleansing Gel and advanced Portal jumping.

Hazards

Falling to Death
Death Fizzler

Walkthrough

Story Mode

Chamber Part 1

Go up the stairs to the left to get to where the Gels are falling.
Place a portal underneath the Repulsion Gel.
Walk back down the stairs and toward the Repulsion Gel poster and turn right.
Place your second portal on the ceiling to cover the floor in Repulsion Gel.
Press the Pedestal Button to drop a Cube on the raised platform.
Jump up to the raised platform with the Repulsion Gel and take the Cube down.
Walk to the edge of the pit across from the Pedestal Button.
Move your second portal around the various portal surfaces in the pit to spread Repulsion Gel over as much of the pit floor as possible.
Bounce across the pit to the ledge with the second Pedestal Button.
Press the second Pedestal Button to disable the Death Fizzler.
Bounce back across the pit and pick up the Cube.
Bounce across the pit to the area previously blocked off by the Death Fizzler, making sure to bring the Cube along.
Place your second portal on the slanted portal surface above you to get more Repulsion Gel on the floor.
Place your first portal on the floor portal surface directly below the pit ledge.
Pick up the Cube and jump with it into your first portal on the pit floor to fling yourself to the exit.
Place the Cube on the Heavy Duty Super-Colliding Super Button to open the exit door.

Chamber Part 2

Place your first portal on the floor underneath the Vital Apparatus Vent close to the Material Emancipation Grill.
Place your second portal on the slanted portal surface.
Press the Pedestal Button to drop a Cube through the portal.
Stand on the Heavy Duty Super-Colliding Super Button to temporarily disable the Material Emancipation Grill, allowing the Cube to fling into the Heavy Duty Super-Colliding Super Button on the the wall behind it and drop the second Cube.
Place the second Cube on the Heavy Duty Super-Colliding Super Button right as a flung Cube is fizzled in the Material Emancipation Grill.
Jump on the Victory Lift quickly before the second Cube is fizzled and the Victory Lift rises.
Once by the exit door, place your second portal on the floor at the bottom of the ledge.
Catch the Cube when it flies up to you from the portal.
Place the Cube on the Heavy Duty Super-Colliding Super Button beside the exit door to open it.

Advanced Mode

Chamber Part 1

Walk through the Material Emancipation Grill to the right.
Press the Pedestal Button on the right to drop a Cube on the raised platform.
Walk to the edge of the pit beside the Pedestal Button on the left.
Place both portals on the pit floor; one directly below you and one beside the platform with the Pedestal Button on the other side of the pit.
Jump through the portal to fling yourself up to the other platform.
Press the Pedestal Button to disable the Death Fizzler.
Jump back through the portal to return to the first area.
Walk back through the Material Emancipation Grill and up the stairs across from it to where the Gels are falling.
Place a portal underneath the Repulsion Gel.
Walk to the edge of the platform past the Cleansing Gel.
Place your second portal on the slanted portal surface to your right to get Repulsion Gel on the floor below it.
Drop through your first portal, making sure to hold your crouch key so the Repulsion Gel doesn't bounce you off the platform.
Move your second portal around the various portal surfaces in the pit to spread Repulsion Gel over as much of the pit floor as possible.
Bounce across the pit to the area with the two Pedestal Buttons.
Place your second portal on the ceiling to cover the floor in Repulsion Gel.
Press the Pedestal Button on the left to temporarily disable the Material Emancipation Grill blocking off the raised platform with the Cube.
Jump up to the raised platform with the Repulsion Gel and take the Cube down before the Material Emancipation Grill turns back on.
Bounce across the pit to the area previously blocked off by the Death Fizzler, making sure to bring the Cube along.
Place a portal on the slanted portal surface above you.
Place your other portal on the floor portal surface directly below the pit ledge.
Pick up the Cube and jump with it into your first portal on the pit floor to fling yourself to the exit.
Place the Cube on the Heavy Duty Super-Colliding Super Button to open the exit door.

Chamber Part 2

Place your first portal on the floor underneath the Vital Apparatus Vent close to the Material Emancipation Grill.
Place your second portal on the slanted portal surface.
Press the Pedestal Button to drop a Cube through the portal.
Stand on the Heavy Duty Super-Colliding Super Button to temporarily disable the Material Emancipation Grill, allowing the Cube to fling into the Heavy Duty Super-Colliding Super Button on the the wall behind it and drop the second Cube.
Place the second Cube on the Heavy Duty Super-Colliding Super Button right as a flung Cube is fizzled in the Material Emancipation Grill.
Jump on the Victory Lift quickly before the second Cube is fizzled and the Victory Lift rises.
Once by the exit door, place your second portal on the floor at the bottom of the ledge.
Catch the Cube when it flies up to you from the portal.
Place the Cube on the Heavy Duty Super-Colliding Super Button beside the exit door to open it.

Video walkthrough

Trivia

Painted lonewolf2056

A goat found in an inaccesible part of this map

A painted "LoneWolf2056" can be found.
In many inaccessible areas around the maps, stock & un-textured models of goats can be found. According to the developers, goats became a running gag during development, leading to the placement of the models for fun. One of them is found in this chamber.
The music played during this chamber is known as Testing Begins.
The second part of this chamber is unchanged between Story Mode and Advanced Mode.