Bonus offline accessories
Become the champion of two weight divisions in Legacy mode, then reach "G.O.A.T" status to unlock extra offline accessories.
Bonus online accessories
Win the Lightweight, Middleweight, and Heavyweight Online belts to unlock extra online accessories.
Maximum stats in Legacy mode
Start a new legacy. Win the tourney, then go to punch totals in the last fight. Press Circle to get +5 to Power, Stamina, and Heart again.
Repeat this until your stats are at maximum.
Easy "David And Goliath", "King Of The Rope-A-Dope", and "My Style Is Impetuous" trophies
Set the round time to 1 minute and the rounds to 1. Just punch him enough to win by decision.
Trophies
Successfully complete one of the following tasks to get a trophy:
A Force To Reckon With (Silver): Win 10 online ranked matches.
Comeback Kid (Silver): Win a online ranked match after being knocked down twice.
David And Goliath (Gold): Beat CPU Mike Tyson in fight now on G.O.A.T.
Echo Trunk Challenge (Silver): Beat CPU Miguel Cotto in fight now on pro.
Get In The Ring (Bronze): Win a fight now match against the CPU.
GOAT (Gold): Retire as the greatest of all time.
King Of The Rope-a-dope (Gold): Beat CPU Mohammad Ali in fight now on G.O.A.T.
Knock A Sucker Out (Silver): Win by a knockout in a fight now match against the CPU.
L (Gold): Win the lightweight championship belt in online world championship mode.
Man Up Manny (Silver): Beat CPU Manny Paqcquiao in fight now on champion.
My Style Is Impetuous (Gold): Beat CPU Mike Tyson on G.O.A.T. using a created boxer in Fight Now.
New Blood (Bronze): Import a boxer into Legacy mode.
Pain Brings Glory (Bronze): Win a match in online world championship mode.
Platinum Trophy: Unlock all other trophies.
Solid Contender (Silver): Win 5 online ranked matches.
The Champ Is Here (Gold): Win a championship belt in a single weight class.
The Road Is Long (Silver): Win 10 fights in Legacy mode.
Undefeated (Silver): Win 5 consecutive Legacy mode fights.
Walk Like 10 Men (Silver): Win 10 fight now matches against the CPU.
XL (Gold): Win the middleweight championship belt in online world championship mode.
XXL (Gold): Win the heavyweight championship belt in online world championship mode.
Additionally, there is one secret trophy:
You're In The Game (Bronze): Create a boxer using the photo game face tool.