BUST-A-MOVE Live

When doing the CPU battle, you can die and restart as many times as you want. You only have to beat them all without exiting the game, if you do it will restart you back at the first CPU opponent. I set my attack mode to H. Although a few times I did beat them using the one that is all rainbow bubbles. Once you beat an opponent and it has the red slash through it you'll move on to the next one. Keep going until all 8 are defeated and the cheevo will pop. My total clear time was 22 minutes and change. My actual play time was a little over an hour because I kept dying on level 4.

Go to single-player, then choose CPU Battle. You must defeat all 8 enemies there. To defeat an enemy, beat him twice (best out of three). If you want to make it easier on yourself, go to Settings and put the game on Easy; you'll still get your achievement.

ps: make sure to finish this in on sitting; if you quit and try to restart, you'll have to start at the beginning. This achievement took me around 16 minutes.