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Portal 2: Thinking With More Than Portals, Testchamber 14

Walkthrough (part 1):
-Use the light bridge to get across the goo (blue portal on the light bridge and orange portal on the perpendicular surface) and bring the cube with you.
-Place the cube on the button. Note the new 'NOT gate' mechanic behind the glass.
-Stand on the lift and shoot an orange portal next to the button to lift the cube up from the button. If it didn't work, place the portal a little higher until the button is off. The lift will rise; proceed through the first door to the second area.
-From the starting ledge, jump to the area with the excursion funnel and repulsion gel. Place a blue portal on the excursion funnel and an orange portal on the white wall next to the glass observation window.
-Proceed to the island with the fizzler. Grab the cube and walk over the stairs to the other side of the fizzler.

Walkthrough (part 2):
-Shoot a blue portal on the repulsion gel and an orange portal on the ceiling above your island.
-Touch the fizzler to clear both of your portals.
-Jump over to the excursion funnel island by using the repulsion gel.
-Shoot a blue portal on the start area and an orange portal on the wall next to the observation window. This time, jump to the right, to the island with the 2 victory lifts.
-Place the cube on the button that activates the Unstationary Scaffold. Use it to proceed to the excursion funnel island. Use the funnel to get to the fizzler island.
-Touch the fizzler to clear both portals and use the repulsion gel and Unstationary Scaffold to get back to the island with the 2 victory lifts.
-Place the cube on the white floor tile and shoot a blue portal on it. Step on lift 1 and shoot an orange portal on the panel that points at the button which toggles the lifts.
-Move to lift 2 and shoot a blue portal on the repulsion gel.
-Proceed to the Chamberlock.