Halo: Reach Official Strategy Guide
From Halopedia, the Halo wiki
Halo: Reach Official Strategy Guide is the official strategy guide for the video game Halo: Reach, published by BradyGames. It was released on September 14, 2010.
The guide contains a detailed map of each mission and multiplayer map, including locations of default weapons. The guide includes a list of all the Achievements and how to unlock each one, a complete bestiary with notes on UNSC and Covenant armament, and an equipment list.
It is also available as the hardcover "Legendary Edition Guide". This limited version has one of six special covers beneath the dustjacket, each showing a member of Noble Team. It also doubles as a Halo: Reach art book, with 80 pages of Reach artwork.
The list of enemy point values on page 384 has an entry called the "Daily Challenge Elite". This might be the BOB, considering that the point value is the same.