No More Heroes/Speed Buster

Speed Buster is the third ranked assassin. She uses a really big energy cannon called the buster cannon.

The easy way to defeat Speed Buster

the game gives you no hints on this one so I can understand if you would have trouble.
 * 1) Just move up the street while she is charging up her cannon and duck into an alleyway or break down a door to go into an abandoned building
 * 2) In the last abandoned house on the left, break the door on the inside and it will take you to another alleyway at the end of the alleyway there is a telephone pole, destroy it. It will knock out the cannon so you can run up to speed buster and end it

Defeating Speed Buster get you an LB and vitality bonus as well as the Japanese Katana to give to Naomi