Fight Night Round 3 cheats for the Xbox 360

Burger King Achievement for 100 points: Beat The BK Invitational Fight.
Dodge Achievement for 100 points: Beat the Dodge sponsored fight.
EA SPORTS Achievement for 150 points: Beat any EA SPORTS sponsored fight.
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
Under Armour Achievement for 100 points: Beat the Under Armour sponsored fight.

BK Mascot Trainner
Beat the Burger King event on Career Mode. Burger King should be an available trainer. He is located under the $50,000 trainer and is free. His specialty is heart increase. (Unverified)
Hint - AI First Blood Exploit
Subject to patch. As soon as the bell rings to start a round, attempt to throw a Stun Punch. More than half of the time, the opponent will stupidly move in toward you and walk right into the blow. This stuns your opponent immediately, allowing you to follow up with a combination or a haymaker for a knockdown. This is extremely useful in Hard Hits bouts if the AI falls for this fake.
Hint: 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.

Unlockable Smooth Style
Beat Muhammed Ali in a challenge event to receive the Smooth basic style and the Judge Jab.
unlockable: All Boxing Boards
You must enter NEWVIEW in the create champ mode as the first name,then save.
Unlockable: Bully Style
Defeat Joe Frasir in classic mode.
Unlockable: Hookmaster Style
Defeat Joe Frasir in classic mode.
Unlockable: Judge Jab
You must defeat Joe Frazier with Ali.
Unlockable: Ko Rey Mo
Go to the light heavy division, and defeat him in career mode.
Unlockable: Lethal Uppercuts
You must defeat a classic fight with Roberto Duran.
Unlockable: Phillyshell
Defeat Jermain Taylor in classic mode.
Unlockable: Sinister Cross
You have to win a Classic fight with Roy Jones Jr.
Unlockable: Slickster Style
Defeat James Toney in career or classic mode.
Unlockable: Staple's Center Venue
You must succeed at the Staple's Center in career mode.
Unlockable: Textbook
You have to win a Classic fight with De La Hoya.
Unlockable: Uptight, and Hard Straights
Beat a Classic fight with Winky Wright in ESPN Classic Mode.
Unlockable; Madison Square Garden Venue
You must win a match at the Madison Square Garden Venue.