Activate the following cheats by entering the corresponding codes at the cheat entry screen in the options menu:

CHEAT FUNCTION - CHEAT CODE
Infinite shard duration - 742737
Grounded cheat - 476863
No Blocking - 888888
Super Knockback - 777777
Captain America/US Agent costume - 925627
Doctor Doom, Ultimate Doctor and Professor Doom costumes - 999999
Falcon, Ultimate Falcon costume - 666666
Iron Man, War Machine costume - 111111
Silver Surfer, Anti-Surfer and Gold Surfer costumes - 555555
Spider-Man, Symbiote Spider-Man costume - 925678
The Hulk, Grey Hulk and Red Hulk costumes - 222222
Thor, Chain Armor and Loki-Thor's costumes - 444444
Wolverine, Brown and Feral costumes - 333333
A.I.M. Agent, and Blue Suit A.I.M. Agent costumes - 246246

Unlock the following characters by performing the corresponding tasks:

CHARACTER - HOW TO UNLOCK
Invisible Woman - Play Silver Surfer's AM with Invisible Woman.
Mole Man - Play Hulk's Adventure mode with Thing.
Ms. Marvel - Play Wolverine's Adventure mode with Captain America.
Storm - Play Thor's Adventure mode with Storm.
Subterranea - Play Hulk's Adventure mode with Thing.

Unlock the following arenas by performing the corresponding tasks:

ARENA - HOW TO UNLOCK
Doom's Lair - Play Falcon's AM with Ms. Marvel.
Galactus - Play Silver Surfer's AM with Invisible Woman.
Odin's Hall - Play Thor's Adventure mode with Storm.
Re- Entry - Play Iron Man's Adventure mode with Ms. Marvel.
Test Chamber - Play Wolverine's Adventure mode with Captain America.