All venues:
To unlock all venues, enter “NEWVIEW” as a first name in Create Champ mode.
Bonus venues:
To unlock the Madison Square Garden and The Staples Center, win a match at them in Career mode.
Box as Ko Rey Mo:
To unlock Ko Rey Mo, defeat him in the light heavy division in Career mode.
Burger King trainer:
Win the Burger King event in Career mode. Then at the trainer selection screen, press Down until the Burger King appears as a choice. He gives you Heart when you fight.
Boxing styles:
Win matches in ESPN Classic Fights mode or Career mode to unlock the following new styles, at random:
Hard Straights
Hook Master
Judge Jab
Lethal Uppercuts
Philly Shell
Sinister Cross
Slickster
Smooth
Textbook
Uptight
Easy wins in Career mode:
To easily win in Career mode, go to the options menu and set “Illegal Blows” to “Off”. Then, go to the fight store and buy the illegal head punch called “Elbow Shot”. During a fight, use the Elbow Shot to counter attack each time your opponent throws a punch. Note: Make sure you use the Elbow Shot as a counter attack so that you can connect cleanly and powerfully on you opponent’s head. You will see that the Elbow Shot inflicts a lot of damage to your opponent, and will KO him in a short period of time, or TKO because you inflicted so much damage to his eyes.