Audiophile

Audiophile is an achievement in Halo 3: ODST and Halo: The Master Chief Collection. It is awarded to players when they find and access the thirtieth and final audio log in the campaign. In order to do so, they must find all 29 audio logs scattered across Mombasa Streets, then follow the Unidentified NMPD officer into Dr. Daniel Endesha's frozen lab on Data Hive, where they will find the final audio log.

In the original game, it is worth 75 Gamerscore and is represented by a gray square containing audio waveforms and 100% written in the lower-right corner, superimposed over a picture of the Superintendent looking happy. In the Master Chief Collection it is only worth 10 Gamerscore, and is represented by a sequence of images from Sadie's Story.