Portal 2 Chapter 3 Test Chamber 16
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Chapter 3 - Test Chamber 16
sp_a2_laser_vs_turret.bsp 
This is the twenty-sixth level of the game, and is set within a dilapidated Test Chamber. This level requires the player to use the Thermal Discouragement Beam in order to deal with multiple Turrets. This level also contains a Rat Man Den.
Hazards
Walkthrough
Video walkthrough
Music
Main article: Portal 2 soundtrack
Turret Wife Serenade by Aperture Science Psychoacoustics Laboratory [1:38] | 
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Play
Gallery
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Notes
- If the player destroys the Turret sitting behind the grating as they enter, using the Thermal Discouragement Beam, they can find an alcove behind from which they can observe 4 Turrets and the Prima Donna Turret practising Turret Wife Serenade for the Turret Opera.