Co-op Course 4 Chamber 5

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Co-op Course 4 Chamber 5

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This is the twenty-eigth level in Co-op mode of Portal 2 and the fifth level in the course. The chamber requires advanced use of the Excursion Funnel. The primary hazard in this chamber is falling to your death.


This chamber introduces the players to a new function with the Excursion Funnel, changing the polarity. This chamber is not that difficult to solve and is fairly straight forward. The bots need to figure out a way to get the cube and then solve the small puzzle of how to get the cube to the receptacle.




  • Falling to your death
  • Goo


# Atlas P-body
1Place a portal on the panels where the Excursion Funnel ends and the other portal on the wall behind the Aerial Faith Plate.
2Use the Aerial Faith Plate and enter the Funnel. Wait until you reach the area with the Weighted Storage Cube. Grab the Cube and go back in the Funnel.
3Go stand on the button to reverse the direction of the Funnel and wait until your partner is above the first Funnel. Fire a portal on the wall opposite of the Cube receptacle and get off from the button.
4You should go through the portal your partner has placed and flow towards a receptacle. Leave the cube in the Funnel and stand before the Goo.
5Proceed to the dissassembly area.

Video walkthrough

-To do-

Related achievements

Obstacle Building
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
Still Alive
Still Alive
Complete Course 4 with neither you nor your co-op partner dying