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.
Dodge Achievement for 100 points
Beat the Dodge sponsored fight.
EA SPORTS Achievement for 150 points
Beat any EA SPORTS sponsored fight.
Easy wins 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.
Go to the options in career mode and set the H.U.D. on and turn off illegal moves. During the fight only do knees to the stomach. Note: You buy the knee move in the Fight store under "Illegal Blows To The Body". You can see your opponents health go down and then it will go into Knockout mode. Then, knock them out. Knees make his health go down faster.
If you are facing a boxer that is stronger than your fighter, try hitting them and moving away. Throw a jab or two then move away from them. This works very well if your boxer is faster. This also helps if your boxer is a lower weight class.
Try to throw a Stun Punch as soon as the bell to start a round rings. Your opponent will usually move towards you and walk into the punch. When your opponent is stunned, follow up with a combination or haymaker for a knockdown. This is very useful in Hard Hits bouts against the CPU.
ESPN FNF Achievement for 150 points
Beat any ESPN Friday Night Fight event.
ESPN PPV Achievement for 150 points
Beat any ESPN Pay Per View fight event.
ESPN WNF Achievement for 150 points
Beat any ESPN Wednesday Night Fight event.
Everlast Achievement for 100 points
Beat the Everlast sponsored fight.
Extra Damage
At the end of every round, you will get a couple of seconds to throw some last minute punches. If you throw an illegal punch after the bell rings (or as it rings), you won’t get a warning from the referee. If you time your punches right, you can squeeze in two punches of any kind and take a good amount of health from your opponent.
Ko Rey Mo and Burger King trainer
Enter YAXKUKMO as a last name in Create A Champ mode.
Madison Square Garden
You must win a match there in career mode.
Quick knock out
Swell one of their eyes, then get adrenaline rush and throw hooks. It helps if you are a hook master.
Remain undefeated
During any fight in Career mode, if you get knocked down and you think you are not going to make it, turn your PlayStation 3 off before the bell rings. When the game is resumed, you can start the match again without a loss.
The Staples Center
Win a match at the Staples Center in career mode.
Under Armour Achievement for 100 points
Beat the Under Armour sponsored fight.
Unlock New Fighting Styles
Win the following style matches in ESPN Classic Fights mode or career mode to unlock those new styles.
Code - Effect
"Hard Straights" Style - Win that style match in ESPN Classic Fights mode or career mode.
"Hook Master" Style - Win that style match in ESPN Classic Fights mode or career mode.
"Judge Jab" Style - Win that style match in ESPN Classic Fights mode or career mode.
"Lethal Uppercuts" Style - Win that style match in ESPN Classic Fights mode or career mode.
"Philly Shell" Style - Win that style match in ESPN Classic Fights mode or career mode.
"Sinister Cross" Style - Win that style match in ESPN Classic Fights mode or career mode.
"Slickster" Style - Win that style match in ESPN Classic Fights mode or career mode.
"Smooth" Style - Win that style match in ESPN Classic Fights mode or career mode.
"Textbook" Style - Win that style match in ESPN Classic Fights mode or career mode.
"Uptight" Style - Win that style match in ESPN Classic Fights mode or career mode.