Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
A Gentleman's Victory (15 points)	Defeat Floyd Patterson in Fight Now on default settings.
Maul the Manassa Mauler (15 points)	Defeat Jack Dempsey in Fight Now on default settings.
Rock the Brockton Blockbuster (15 points)	Defeat Rocky Marciano in Fight Now on default settings.
Take Out the Brown Bomber (15 points)	Defeat Joe Louis in Fight Now on default settings.
The Gloves Come Off (30 points)	Complete a Ranked Match in Bareknuckles Mode.
Unforgiven (15 points)	Defeat Jack Johnson in Fight Now on default settings.