UFC: Sudden Impact Cheats

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Unlock All Characters:
You must time these actions perfectly for this to work.Choose Arcade mode at the main screen and proceed to highlight any unlocked character you have.Then hold L2 and press R2 once every 2 seconds for 10 seconds (5 times). Let go of L2 and tap "up" direction pad 2 times then wait 5 seconds and tao "down" direction pad 2 times.Now exit back to main menu,then simply go back to Arcade mode and you will have all the characters in the game unlocked
User Cheat by Outsidethelines

Boxing style:
Finish Kung-Fu story mode.

Karate style:
Finish Sumo story mode.
User Cheat by ToughLove

Kung-Fu style:
Finish the Pit Fighting story mode.
User Cheat by ToughLove

Luta Libre style:
Finish Pro Wrestling story mode.

MMA (Kempo) style:
Finish Nin Jitsu story mode.

Muai Tai style:
Finish Kickboxing story mode.

Nin Jitsu style:
Finish win Wrestling story mode.

Sambo style:
Finish win Submission story mode.

Submission style:
Finish BJJ story mode.

Bas Rutten:
By winning the championship as a heavyweight fighter two times. You can't do this with a created fighter.

Big John McCarthy:
Intentionally lose over fifty matches. You can't do this with a created fighter.

Dan "The Beast" Severn:
Unlock all the viewable unlockable fighters. You can't do this with a created fighter.

Frank Shamrock:
By winning the championship as a light heavyweight fighter. You can't do this with a created fighter.

Guy Mezger:
By winning the championship as a light heavyweight fighter two times. You can't do this with a created fighter.

Jens Pulver:
By winning the championship as a lightweight fighter. You can't do this with a created fighter.

Jeremy Horn:
By winning the championship as a light heavyweight fighter three times. You can't do this with a created fighter.

Lorenzo Fertitta:
Get 25 wins in arcade mode as a light heavyweight fighter. You can't do this with a created fighter.

Mark Coleman:
By winning the championship as a heavyweight fighter three times. You can't do this with a created fighter.

Mask:
Finish legend mode with a heavyweight created fighter.
D. Just.

Maurice Smith:
By winning the championship as a heavyweight fighter. You can't do this with a created fighter.

Murilo Bustamante:
By winning the championship as a middleweight fighter. You can't do this with a created fighter.

Pete Williams:
By winning the championship as a heavyweight fighter five times. You can't do this with a created fighter.

Tsyoshi Kohsaka:
By winning the championship as a heavyweight fighter four times. You can't do this with a created fighter.

Legend mode:
Win championship mode with any fighter to unlock his legend mode.

Bonus moves:
Win champion mode, tournament mode, legend mode, and progress through arcade mode to unlock an additional move for that fighter.

UFC Sudden Impact Official Game Site

UFC Sudden Impact Review - PGNX

UFC Sudden Impact Review - 3D Avenue

UFC Sudden Impact Review - GameSpot

UFC Sudden Impact Review - Thunderbolt