A ranked match requires at least 4 players to launch. No one plays this game online anymore so you will have to set up a boosting session or find some friends to help you unlock this achievement.
From the main menu go to (Versus - Xbox LIVE Ranked Match - Host a Ranked Match) and then change the settings to:Game Mode:
You will have to either waste 15 minutes or get 30 kills to finish the game. You do not have to win the match to get this achievement, but you may want to win to work toward the following achievements: