Portal 2 Chapter 8 Test Chamber 4

This is the fiftieth level of the game, and takes place within an incomplete Aperture Science Test Chamber. This level features the Excursion Funnel, and introduces the way in which Buttons can be used to change the direction of Funnels. Turrets are present as an additional hazard in this level.

Mechanics

 * Frankenturret
 * Vital Apparatus Vent
 * Heavy Duty Super-Colliding Super Button
 * Excursion Funnel

Hazards

 * Deadly Pits
 * Turrets

Characters

 * Chell
 * GLaDOS
 * Wheatley

Locations

 * Test Chamber 04

Objective

 * Go through Wheatley's Test Track.