Game Unlockables
Below a list of unlockables in 24/7 mode.

Unlockable: How to Unlock:
Hardcore champinship - Buy for $20,000 in WWE Shop
JBL - Buy for $110,000 in WWE Shop
Millon Doller champinship - Buy for $20,000 in WWE Shop
Shane Mcmahon - Buy for $110,000 in WWE Shop
Shawn Michaels D-X attire - Buy for $60,000 in WWE Shop
Triple H D-X attire - Buy for $60,000 in WWE Shop
Vince Mcmahon - Buy for $110,000 in WWE Shop
Vince Mcmahon Bald attire (First you must unlock Vince Mcmahon) - Buy for $60,000 in WWE Shop
WWF Attitude Era champinship - Buy for $20,000 in WWE Shop

Legends
Go into 24/7 Mode, select the Laptop, and select WWE Shop.

Unlockable: How to Unlock:
"Ravishing" Rick Rude Buy in WWE Shop for $210,000.
"Rowdy" Roddy Piper Buy in WWE Shop for $210,000.
"Stone Cold" Steve Austin Go into the Hall of Fame and select Stone Cold. After defeating him in a Submission Match using Bret Hart, you can buy him in the WWE Shop. $210,000
Bret Hart Defeat Bret Hart in the Hall of Fame direct challenge mode. Afterwards, buy him in the WWE Shop. $210,000
Hardcore Championship Become a Hall of Famer ($20,000).
HBK DX Entrance Buy the DX outfits ($30,000).
HBK DX Outfit Already available for purchase ($60,000).
HHH DX Entrance Buy the DX outfits ($30,000).
HHH DX Outfit Already available for purchase ($60,000).
JBL Already available for purchase ($110,000).
Mick Foley Defeat Mick Foley in the Hall of Fame direct challenge mode. Afterwards, buy him in the WWE Shop. $210,000
Million Dollar Championship Become a Hall of Famer ($20,000).
Move Set 1 Already available for purchase ($15,000).
Move Set 2 Already available for purchase ($15,000).
Move Set 3 Already available for purchase ($15,000).
Preset Move Set Buy all move sets ($15,000).
Rick Rude Already available for purchase ($210,000).
Roddy Piper Already available for purchase ($210,000).
Sabu Buy in the WWE Shop for $210,000
Shane McMahon Already available for purchase ($60,000).
Terry Funk Defeat Tommy Dreamer, Sabu and Sandman in an ECW Extreme Rules 4-way match using any superstar on "Legend" Difficulty. $210,000.
The Rock Defeat The Rock as Stone Cold in "Legend" Difficulty. $210,000
Vince McMahon Complete 24/7 GM mode and become GM Of The Year ($110,000).
Vince McMahon (Bald) Buy the original Vince McMahon ($60,000).
WCW Classic Championship: Become be a Hall of Famer ($20,000).
WWF Attitude Era Championship: Become be a Hall of Famer ($20,000).

Arenas
Complete tasks in Hall of Fame Mode to get these.
Unlockable: How to Unlock:
December to Dismember Arena Get 8 points in Hall of Fame Mode
ECW One Night Stand Arena Get 7 points in Hall of Fame Mode
Great American Bash Arena Get 10 points in Hall of Fame Mode
New Year's Revolution Arena Get 9 points in Hall of Fame Mode
No Way Out Arena Get 5 points in Hall of Fame Mode
Summerslam arena Get 11 points in hall of fame mode.
Vengeance Arena Get 6 points in Hall of Fame Mode
Wrestlemania 23 Arena Get 12 points in Hall of Fame mode

Characters
Unlockable Characters...
Unlockable: How to Unlock:
JBL Gain Main Eventer rank in Main Event Mode for Smackdown!
Shane McMahon Gain Main Eventer rank in Main Event Mode for Raw
Vince McMahon Gain Main Eventer rank in Main Event mode for ECW