If You complete the indicated task You'll get the allotted gamerscore.
World Champion (50) - Become the World Champ in Career Mode.
Hot Shots (50) - Achieve 50 Signature Punch KO's in single or multiplayer.
Swinger (35) - Do 50,000 thrown shots.
Ring a Ding Bling (30) - Earn your first career million.
Don King Promoted (30) - Join Don's Team during your career.
Jab Master (20) - Take it up top and land 1000 Jabs in any game mode.
Hook Hero (20) - Take it up top and land 1000 Hooks in any game mode.
Uppercut Machine (20) - Take it up top and land 1000 Uppercuts in any game mode.
Lightning KO (20) - KO an opponent in the first 60 seconds of round 1 in any game mode.
Twinkle Toes (20) - Rack up a ring mile.
Easy Pickings (20) - Defeat Nino Basilio.
Judge Dreadful! (20) - KO Dave Saddler.
One Armed Bandit (20) - KO Sven Zurilo.
Can't Touch This! (10) - KD an opponent without taking a single shot.
Stick and Move (5) - Move more than your opponent.
First Steps (5) - Turn Pro in Career Mode.