Here is the full list of all 12 The Warriors: Street Brawl achievements worth 200 gamerscore.
Player must beat enemies to get 20xCombo
Player must complete any Mission over Xbox LIVE
Player must amass 500,000 points
Player must win 10 games in VS Mode
Player must clear a rival gangs turf, start to finish, without losing a life
Player must rack up 2,500,000 points
"You Warriors are good. Real good." Player must complete Story Mode
Accumulate 9 backup lives for your Warrior
Player must wreck enemy gang members to get a 50x chain
Player must defeat the worst of the worst in the arena of Boss Mode
Player must use Rage
Player persevere against the odds in Arcade Mode