Developer commentary is a mode selectable on the main menu in which you can enter one of three maps (Hydro, Gravel Pit, or Well) and listen to the developers describe the design process for each map, as well as for the various weapons, features, and classes in the game. The player enters the designated spawn room and can travel to various different commentary nodes by pressing the alt-fire button (left trigger on the Xbox 360). The player can activate a commentary node by pressing the primary fire button (right trigger on the Xbox 360) while standing next to it. Occasionally, the game will take control of the camera to showing the player a specific angle or section to illustrate a point.
March 8, 2012 Patch
- Fixed a commentary string that referenced the Soldier instead of the Heavy
January 16, 2017 Patch
- Fixed the developer commentary audio files not being played properly.