In DOA QUEST Mode (Selected From The Main Menu)
Each Level Will Give You Three Objectives With A "Star" tied to each.
One Of Which Is Usually "Win The Match".
Doing The Other Objectives Will Net You More Stars, But Are Sometimes Tough For Your Average New Player.
Gathering Enough Stars Unlocks More "Levels", In Which You Can Gather More Stars.
Levels Can Be Repeated Infinitum.
Getting 10 Stars Nets You This Achievement.
Goodluck!