To gain all 3 season achievements without doing the harder difficulties, first complete season mode by winning/defending title at wrestlemania. Save immediately after. Then continue as normal til you see the credits. The first unlock achievement should show. Now restart the 360 while on the credits and go back into season mode, change the difficulty to something different and view the credits again, this will unlock the other achivement. continue til you have done all 3.
Additional Gm Mode Options
Win the GM of The Year Trophy.
Arenas
Win the indicated trophy in Season mode to unlock the corresponding arena.
Backlash Arena: Backlash Trophy
ECW One Night Stand Arena: Win Money in the Bank Ladder Match on Legend Difficulty
No Mercy Arena: No Mercy Trophy
Saturday Night Main Event Arena: Superstar Challenge Trophy
SummerSlam Arena: SummerSlam Trophy
Unforgiven Arena: Unforgiven Trophy
Vengeance Arena: Vengeance Trophy
WrestleMania 22 Arena: WrestleMania Trophy
Certified Online Superstar
Win 50 consecutive online matches.
Championship Gold!
Unlock every WWE Championship title.
Complete Domination!
Defeat every Superstar on the roster at least once on legend difficulty.
Crown Us The Champ! (10)
Create a Tag Team Championship in Create-A-Championship mode.
Curtain Call (5)
Create an original entrance in Create-An-Entrance mode.
Different Story Mode
Play as Edge in Season mode and there will be a different chapter in the bring of the game.
Divas Loading Screen
Win the No Mercy Trophy to unlock the Divas loading screen for purchase.
Divas Loading Screen
Win the No Mercy Trophy.
Dx Tag Entrance
Win the Vengeance Trophy.
DX tag entrance
Win the Vengeance Trophy.
Easy Wins
These are two easy ways to win in matches. If the match is a no DQ than you get out of the ring and get a weapon to hit your oppenet until they start bleeding. When they start to bleed just do your finisher and pin them. If it is a DQ match irish whip (Hold RB+A) your oppent out of the ring. Than keep attacking them until the ref's count is at 9 run back into the ring.
Employee of the year
Win the General Manager of the year trophy.
Hardcore Championship Belt
Win the Superstar Challenge Trophy.
In Ring Journeyman
Win at least one match using every Superstar on the roster on any difficulty setting.
In Ring Technician
Defeat every Superstar on the roster by pin or submission at least once on hard difficulty.
Let It Reign!
Defend your created Championship 50 times online.
Let The Creative Juices Flow (5)
Create one original Superstar using the Create-A-Superstar mode.
Million Dollar Championship
Complete The Legend Challenges.
Mr. PPV (5)
Create an original PPV event in Create-A-PPV mode.
n.W.o. Championship
Unlock it by winning the SummerSlam Trophy and then you can buy it in the shop.
New Hire
Complete one full year of General Manager mode.
Nwo Championship
Win the SummerSlam Trophy to unlock the nWo Championship for purchase at the shop.
Online Blue Chipper
Win 20 consecutive online matches.
Online Rising Star
Win 20 matches online.
Online Veteran
Win 50 matches online.
Royal Rumble Jobber
Win a 15 Man Exhibition Royal Rumble as the #1 entrant on any difficulty.
Royal Rumble Legend
Win a 30 Man Exhibition Royal Rumble as the #1 entrant on legend difficulty.
Royal Rumble Pro
Win a 25 Man Exhibition Royal Rumble as the #1 entrant on hard difficulty.
Royal Rumble Rookie
Win a 10 Man Exhibition Royal Rumble as the #1 entrant on any difficulty setting.
Royal Rumble Veteran
Win a 20 Man Exhibition Royal Rumble as the #1 entrant on hard difficulty.
Season Mode Jobber
Complete Season mode on easy or normal difficulty.
Season Mode Legend
Complete Season mode on legend difficulty.
Season Mode Veteran
Complete Season mode on hard difficulty.
Seasoned Vet
Win 100 matches on any difficulty setting.
Self Anointed Champion (10)
Create a singles Championship in Create-A-Championship mode.
Smoking Skull Championship
Win the Royal Rumble Trophy to unlock the Smoking Skull Championship for purchase at the shop.
Smoking Skull Championship
Unlock it by winning the Royal Rumble Trophy and then you can buy it in the shop.
The Hardcore Championship
Belt Win the Superstar Challenge Trophy.
Those Who Paved The Way
Unlock every WWE Legend.
Unlimited CAW EXP Points
Become GM Of The Year In GM Mode.
Unlimited Created Wrestler Points
Win the GM of The Year Trophy.
Way Past Jobber
Win 50 matches on any difficulty setting.
With Friends Like These...(5)
Create an original stable of Superstars in Create-A-Stable mode.
WWE Legends
Win the indicated PPV trophy in Season mode to unlock the corresponding wrestler for purchase at the shop.
Bam Bam Bigelow: Unforgiven Trophy
Bret Hart: Survivor Series Trophy
Cactus Jack: SummerSlam Trophy
Dude Love: SummerSlam Trophy
Hulk Hogan: WrestleMania Trophy
Jerry 'The King' Lawler: No Way Out Trophy
Jim 'The Anvil ' Neidhart: Survivor Series Trophy
Mankind: SummerSlam Trophy
Mr. Perfect: Backlash Trophy
Shane McMahon: Armageddon Trophy
Steve Austin: Royal Rumble Trophy
Stone Cold Steve Austin: Royal Rumble Trophy
Tazz: No Way Out Trophy
The Rock: WrestleMania Trophy