Here is the full list of all 6 Bonnaroo achievements worth 0 gamerscore. It takes around 1-2 hours to unlock all of the achievements on Xbox One.
You watched 5 videos from the “Backstage Exclusives” channel
You watched 5 videos in “The Bonnaroo Experience.”
You’ve accessed all channels in the Bonnaroo app
You’ve added 3 events to your events.
You watched 5 videos in the “Best of Bonnaroo” channel
You watched 3 videos from each of the daily “2014 Highlights” channel