Here is the full list of all 11 Real Boxing™ achievements.
Win the Boxing Legends belt.
Win all belts without getting knocked down once in the process.
Fully train your character.
Win 50 fights.
Perform 100 counterattacks.
Win a fight without getting hit.
Win the Night of the Champions belt.
Win the Roosters' Tournament belt.
Win your first fight.
Win your first fight by KO.
Complete the tutorial.