Mega Man Star Force 3 Black Ace, Hints on beating Diamond Ice please

wow pretty much everyone gave what you need and if you can't beat the second boss in this and u have an r4 you should train on megaman starforce 1 and 2 makes things easier ALOT easier ;D

I guess, but meh can't be bothered i need a AR code for a R4 and that's final. bottom line, full stop, the end, end of story good bye get the picture.