Portal 2 Chapter 2 Test Chamber 4

This is the fourteenth level of the game, and takes place within a dilapidated Test Chamber. This level continues to use the Thermal Discouragement Beam as its primary mechanic, and demonstrates the way in which interrupting the Discouragement Beam can be used to the player's advantage. The Test Chamber also introduces the Unstationary Scaffold, and Toxic Water is present as the primary environmental hazard.

Hazards

 * Toxic water
 * Thermal Discouragement Beam