Xxain on 14 July 2015
In the Megaman Series in general - Multi hit weapons can kill bosses quickly. Fire the weapon, make sure it connects, then repeatedly pause and unpause the game and will register as a hit every time. Thunder Claw in Megaman 8 is an example.
In the Third Birthday for psp, the same story with laser weapon, but this time just leave it paused for a few minutes and then unpause it and whatever you hit will die instantly.
