Daredevil:
Press Left, Left, Right, Right, Up, Down, Up, Down, Start at a S.H.I.E.L.D. Access point (where you select your team). A sound will confirm correct code entry.
Silver Surfer:
Press Down, Left, Left, Up, Right, Up, Down, Left, Start at a S.H.I.E.L.D. Access point (where you select your team). A sound will confirm correct code entry.

All characters:
Press Up, Up, Down, Down, Left, Left, Start at a S.H.I.E.L.D. save zone menu or the main menu.

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

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

The Courses:
Press Up, Right, Left, Down, Up, Right, Left, Down, Start at the simulator terminal screen where you choose a Comic Book mission.

All comic book covers:
Press Left, Right, Right, Left, Up, Up, Right, Start at the Review menu.

All concept art:
Press Down, Down, Down, Right, Right, Left, Down, Start at the Review menu.

All cinematics:
Press Up, Left, Left, Up, Right, Right, Up, Start at the Review menu.

All wallpapers:
Press Up, Down, Right, Left, Up, Up, Down at the Review menu.

Filler:
Press Left, Right, Right, Left, Up, Down, Down, Up during game play.

God Mode:
Press Up, Down, Up, Down, Up, Left, Down, Right, Start during game play.

Touch of Death:
Press Left, Right, Down, Down, Right, Left, Start during game play.

Super Speed:
Press Up, Left, Up, Right, Down, Right during game play.

100,000 Gold Coins:
Press Up, Up, Up, Left, Right, Left, Start at the team menu or hero management screen.

Level 30 team:
Press Up, Left, Up, Left, Down, Right, Down, Right, Start at the team menu.