Wolverine's Berserker Barrage:
D, DF, F + All Punches. This can be done at level 1 super or higher.

Gambit is the best charecter to use. In level 2, pause the game a press up, 
up, X, X, O. this will give you 30sec of electric power. When you come to 
attack another baddie, press o and a stream of electric power will melt them 
to liquid.

FOR STORMS SUPER POWER pause the game and roll from down to 
forward and hit any punch really quickly. Be prepared for some major 
destruction though!