The Whole Gang's Here
The eight companions you need for this achievement are: Arcade Gannon, Craig Boone, ED-E, Lily Bowen, Raul Tejada, Rex, Rose of Sharon Cassidy, and Veronica Santangelo. You must get all the companions in one game in order to get the achievement.
- pc ps3 xbox360 This achievement may on occasion bug and instead of hiring all of the companions, all you need to do is hire 8 companions; even hiring the same companion in 8 playthroughs qualifies for this achievement. [verified]