Play as powered up brimstone
Press B+R at the same time to make Brimstone get bigger shoot many charged up flare missiles and use the deadly ''Inferno''.
See Different Intros
At the beginning of the game, before the normal intro, hold a direction on the +control pad. A different intro will appear. There are 12 total, seen by holding left, right, up, or down. The other eight are seen by holding the left or right trigger with a direction.