Cheat IT

Invincibility:
While playing the game, quickly press:
Up, Down, Up, Down, Up, Left, Down, Right, Start.

Level 30 team:
At the team menu, quickly press:
Up, Left, Up, Left, Down, Right, Down, Right, Start.

100,000 Gold Coins:
At the team menu, quickly press: Up(3), Left, Right, Left, Start.

All characters:
At the main menu or a S.H.I.E.L.D. save zone menu, quickly press:
Up(2), Down(2), Left(3), Start

All cinematics:
At the Review menu, quickly press:Up, Left(2), Up, Right(2), Up, Start

All comic book covers:
At the Review menu, quickly press: Left, Right(2), Left, Up(2), Right, Start

All concept art:
At the Review menu, quickly press: Down(3), Right(2), Left, Down, Start

All costumes:
At the main menu or a S.H.I.E.L.D. save zone menu, quickly press:
Up, Down, Up, Down, Left, Right, Left, Right, Up, Down, Start

All powers:
At the main menu or a S.H.I.E.L.D. save zone menu, quickly press:
Left, Right, Left, Right, Up, Down, Up, Down, Left, Right, Start

All wallpapers:
At the Review menu, quickly press: Up, Down, Right, Left, Up(2), Down, Start

Filler:
While playing the game, quickly press:
Left, Right(2), Left, Up, Down(2), Up, Start.
Your extreme attack will always be available with no energy cost.

Super Speed:
While playing the game, quickly press: Up, Left, Up, Right, Down, Right, Start