Unlock HHH and HBK'sDX outfits:
     Enter DXCostume69K2 as a cheat code.

Unlock Kelly Kelly alternate outfit:
     Enter KellyKG12R as a cheat code.


Unlockables:

Mr. Perfect                  Win the Backlash Trophy
Shane McMahon                Win the Armageddon Trophy
The Rock                     Win the WrestleMania Trophy
Cactus Jack                  Win the SummerSlam Trophy
The Anvil Jim Neidhart       Win the Survivor Series Trophy
Tazz                         Win the No Way Out Trophy
Mankind                      Win the SummerSlam Trophy
Stone Cold Steve Austin      Win the the Royal Rumble Trophy
Jerry "the King" Lawler      Win the No Way Out Trophy
Bret Hart                    Win the Survivor Series Trophy
Hulk Hogan                   Win the WrestleMania Trophy
Dude Love                    Win the SummerSlam Trophy
Bam Bam Bigelow              Win the Unforgiven Trophy
WrestleMania 22 Arena        Win the WrestleMania Trophy in Season Mode
Vengeance Arena              Win the Vengeance Trophy in Season Mode
Unforgiven Arena             Win the Unforgiven Trophy in Season Mode
ECW One Night Stand Arena    Win Money in the Bank Ladder Match 
                             on Legend Difficulty
SummerSlam Arena             Win the SummerSlam Trophy in Season Mode
Saturday Night 
Main Event Arena             Win the Superstar Challenge Trophy
No Mercy Arena               Win the No Mercy Trophy in Season Mode
Backlash Arena               Win the Backlash Trophy in Season Mode
Million Dollar Championship  Beat The Legend Challenges
n.W.o. Championship          Win the SummerSlam Trophy
Smoking Skull Championship   Win the Royal Rumble Trophy
The Hardcore Championship 
Belt                         Win the Superstar Challenge Trophy
Divas Loading Screen         Win the No Mercy Trophy
DX tag entrance              Win the Vengeance Trophy
WWE Legends Loading Screens  Beat the Legend Challange Mode
Unlimited CAW EXP Points     Become GM Of The Year In GM Mode