Here is the full list of all 21 Fight Night Round 4 trophies - there are 4 bronze, 9 silver, 7 gold and 1 platinum.
Beat CPU Muhammad Ali in Fight Now on G.O.A.T.
Beat CPU Mike Tyson in Fight Now on G.O.A.T.
Beat CPU Miguel Cotto in Fight Now on Pro.
Win 10 Fight Now matches against the CPU
Beat CPU Manny Pacquiao in Fight Now on Champion.
Retire as the Greatest Of All Time
Win a championship belt in a single weight class.
Win 10 fights in Legacy Mode
Win 5 Consecutive Legacy Mode fights
Win by a knockout in Fight Now against the CPU
Win a Fight Now match against the CPU
Unlock all other trophies
Import a boxer into Legacy Mode
Create a boxer using the Photo Game Face tool
Win the Heavyweight Championship Belt in Online World Championship Mode.
Win the Middleweight Championship Belt in Online World Championship Mode.
Win the Lightweight Championship Belt in Online World Championship Mode.
Win 5 online ranked matches.
Win 10 online ranked matches.
Win a match in Online World Championship Mode.
Win a Online ranked match after being knocked down twice.