Dragon Ball: Raging Blast 2

Easily won if you have the patience and either nothing else to do or are a perfectionist, you can do this by playing Battle Zones with each character and get a title for each one upon completion of ANY zone, or just play online and gain titles that way, I suggest Battle Zones, that's how I got it :)

More time consuming than Title Collector, you'll need to complete a Battle Zone with 50 different characters. Less if you play regularly on XBL, since you get titles through how you play.