Use arcade mode and fight till you face and defeat Spiderman. Now highlight Cyclops and Hold L1 at the
Character select screen
At the main screen press Select, Down, R2, L1, R1, L2. To get Spider-Man, highlight Cyclops and hold L1
at the character selection screen. To get Professor X, highlight Magneto and hold L1 at the character selection screen.
Use arcade mode and finish the game using Wolverine
Get Professor Xavier
After finishing the game with Juggernaut go to the character select screen and highlight Magneto and hold
Beat the game with every character