hey, here are some things that i know about WWE. (i am not kidding about this, but i am a girl)
i hope all of this helps!
..Dirt Sheet and Vince's Office Backstage Brawl areas
Enter "BonusBrawl" as a case-sensitive code to unlock the Dirt Sheet and Vince's Office
Backstage Brawl areas. -From: Matthew Hamilton

Wrestle as The Rock
Enter "The Great One" as a case-sensitive code to unlock The Rock.

John Cena's alternate attire
Enter "CENATION" as a case-sensitive code to unlock John Cena's alternate attire.

Randy Orton's alternate attire
Enter "ViperRKO" as a case-sensitive code to unlock Randy Orton's alternate attire.

Santino Marella's alternate attire
Enter "Milan Miracle" as a case-sensitive code to unlock Santino Marella's alternate attire.

Shawn Michaels' DX attire
Enter "Bow Down" as a case-sensitive code to unlock Shawn Michaels' DX attire.

Triple H's DX attire
Enter "*** IT!" as a case-sensitive code to unlock Triple H's DX attire.

•Bonus Backstage Brawl areas
Successfully complete the indicated task in Road To WrestleMania mode to unlock the corresponding area:

Dirt Sheet: Play as Brand Warfare, and win the handicap match with either Triple H or John Cena in Week 11.
Interview Room: Play as Shawn Michaels, and successfully complete Road To WrestleMania mode.
Locker Room: Play as Edge, and drag Mr. Kennedy on top of the Big Show and count the pinfall at No Way Out.
Vince's Office: Play as a created Superstar, and win your match in Week 6.

•Bonus characters
Successfully complete the indicated task in Road To WrestleMania mode to unlock the corresponding character:

Cowboy Bob Orton: Play as Randy Orton, and do not use any strikes in your match in Week 9.
Dusty Rhodes: Play as Randy Orton, and defeat Cody Rhodes at WrestleMania and K.O. Dusty after the match.
Eve: Play as Mickie James, and pin or submit Maryse in Week 2.
Ezekiel Jackson: Play as a created Superstar, and throw each opponent out of the ring at least once in Week 3.
Green and Red Dummies: Play as Randy Orton, and refuse Cody's help, then reverse three of Batista's attacks in Week 3.
Jesse: Play as Edge, and hit every opponent with a finisher in Week 2.
Mr. McMahon: Play as Edge, and put Triple H through an announcer table in Week 11.
"The Million Dollar Man" Ted DiBiase: Play as Randy Orton, and defeat Ted DiBiase Jr. at WrestleMania and K.O. "The Million Dollar Man" after the match.
The Rock: Play as Edge, and successfully complete Road To WrestleMania mode.
Trish Stratus: Play as Mickie James, and successfully complete Road To WrestleMania mode.

•Alternate attire
Successfully complete the indicated task in Road To WrestleMania mode to unlock the corresponding character's alternate attire:

Chris Jericho: Play as HBK, and make Jericho bleed in Week 6.
Edge: Play as Edge, and win in under three minutes in Week 6.
JBL: Play as HBK, and win the match in under four minutes in Week 8.
John Cena (street clothes): Play as Brand Warfare, and put Kane through a table in less than 2:30 with John Cena in Week 4.
Mickie James: Play as Mickie James, and defeat Michelle McCool in under three minutes in Week 6.
Miz and Morrison (street clothes): Play as Brand Warfare, and win the handicap match with either Triple H or John Cena in Week 11.
Mr. Kennedy: Play as Edge, and eliminate Mr. Kennedy from the Royal Rumble match.
Mr. McMahon (chicken head): Play as a created Superstar, and spend at least one minute of the match outside the ring in Week 5.
Mr. McMahon (suit): Play as a created Superstar, and win the WrestleMania match.
Natalya: Play as Mickie James, and choose Kendrick over Natalya in Week 9. Then, win the match while suffering minimal damage in Week 10.
Santino Marella (street clothes): Play as a created Superstar, and make a successful diving attack from the top of the ladder in Week 12.
Shawn Michaels: Play as HBK, and hit both opponents with Sweet CHIN Music in Week 4.
Shawn Michaels (DX Option 1): Play as HBK, and accept the Retirement Match in Week 10. Then, have your partner be the legal man longer in Week 11.
Shawn Michaels (DX Option 2): Play as HBK, and decline the Retirement Match in Week 10. Then, execute three Double Team attacks in Week 11.
Randy Orton: Play as Randy Orton, and R.K.O. Dusty Rhodes at No Way Out.
The Brian Kendrick: Play as Mickie James, and choose Natalya over Kendrick in Week 9. Then, win the match without using a signature move or finisher in Week 12.
Triple H (DX): Play as Brand Warfare, and win your match in under three minutes with Triple H in Week 6.

•Extra Road To WrestleMania unlockables
Successfully complete the indicated task in Road To WrestleMania mode to unlock the corresponding bonus:

Champion Of Champions title belt: Play as Brand Warfare, and win at WrestleMania.
DX, Morrison, The Hardys, and The Miz tag entrances: Play as Brand Warfar, and win the Battle Royal with Triple H or John Cena in Week 2.
Road To WrestleMania Event Skip feature: Play as Randy Orton, and spend less than two minutes in the ring with the legal Superstar in Week 12.
Santino Marella Story Designer story: Play as a created Superstar, and reach 500 degrees at least four times in Week 11.

•Extra abilities
Successfully complete the indicated task to unlock the corresponding ability in Create-A-Superstar mode. To assign them, select "Abilities", then choose "Create-A-Moveset".


Durability: Get your Durability score to 85.
Exploder Tunbuckle Attack: Get your Speed score to 75.
Fan Favorite: Get your Charisma score to 80.
Fired Up: Get your Overall rating to 90.
Hardcore Ressurrection: Get your Hardcore score to 90.
Kip Up: Get your Technical score to 85.
Lock Pick: Get your Submission score to 80.
Object Specialist: Get your Hardcore score to 70.
Resiliency: Get your Overall rating to 92.
Strong Strike: Get your Strike score to 85.

•Getting CAW points
Perform the indicated moves to get CAW points:

Charisma: Perform taunts during matches, and win with a Finisher or Signature move.
Durability: Take small amounts of damage during a match.
Grapple: Perform strong, corner, and ground grappling moves.
Hardcore: Perform attacks with objects to make your opponents bleed.
Speed: Perform running strikes, and diving and springboard attacks.
Strikes: Perform strong, corner, and ground strikes.
Submission: Perform submission moves.
Technical: Perform reversals and attacks after ducking or leapfrogging.