Get the indicated number of Hall Of Fame mode points to unlock the corresponding 
arena:

  December to Dismember: 8 
  ECW One Night Stand: 7 
  Great American Bash: 10 
  New Year's Revolution: 9 
  No Way Out: 5 
  Summerslam: 11 
  Vengeance: 6 
  Wrestlemania 23: 12