At the team menu, quickly press Up(3), Left, Right, Left, Start.
All characters
At the main menu or a S.H.E.I.L.D. save zone menu, quickly press Up(2), Down(2), Left(3), Start to unlock all characters. If you entered the code correctly, you will hear a sound.
All cinematics
At the Review menu, quickly press Up, Left(2), Up, Right(2), Up, Start to unlock all cinematics.
All comic book covers
At the Review menu, quickly press Left, Right(2), Left, Up(2), Right, Start to unlock all comics.
All concept art
At the Review menu, quickly press Down(3), Right(2), Left, Down, Start to unlock all concept art.
All costumes
At the main menu or a S.H.E.I.L.D. save zone menu, quickly press Up, Down, Up, Down, Left, Right, Left, Right, Up, Down, Start to unlock all costumes. If you entered the code correctly, you will hear a sound.
All powers
At the main menu or a S.H.E.I.L.D. save zone menu, quickly press Left, Right, Left, Right, Up, Down, Up, Down, Left, Right, Start to unlock all powers. If you entered the code correctly, you will hear a sound.
All wallpapers
At the Review menu, quickly press Up, Down, Right, Left, Up(2), Down, Start to unlock all wallpapers.
Character specific items
Character specific gear is very valuable. When picking up character specific items, such as "Iron Man's Coil", it is described as doing +3 Damage and +3 Rocket Uppercut. This is not +3 to damage for the hit; it means that it adds three dots in the Powers area. With this single item you can go from 129 Damage to 289 Damage.
Easy Comic missions
To complete all the Comic missions easily and unlock Silver Surfer and get gold at the same time, wait and play all the missions at the end of the game when your characters have leveled up and have decent powers. If some are still to difficult to complete, play some Versus mode missions with those characters to level them up and/or pick up some Shield Tokens to add to their costume.
Easy experience and money
When lighting the candles in Mephisto's Realm, there is an area where you are supposed to throw the demon jumpers into the fire to lower the pedestal. If you stand by the edges of the level where the jumpers respawn, you can kill as many as desired. Try this as Spider-Man or any rapid fire projectile character. The enemies constantly drop money and energy refills. If one walks too far away, hopefully your teammates will chase after them and you can use the momentum move to wipe them out. Keep doing this for easy experience and money.
Easy Iron Man Comic mission
When you get to the end of the mission to battle Ultimo, run back to the door you came in. Ultimo is so big he cannot pass the edge of the room he is in. You can just keep hitting him with your ranged attacks, then when needed, fly in and collect the health and energy vials he drops.
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.
Fourth alternate costume
Successfully complete the Combat Training challenge for a character to unlock his or her fourth costume.
Hard mode
Successfully complete the game on the Normal difficulty setting to unlock the Hard difficulty setting. Do not be afraid of the Hard difficulty setting. When you start a game under Hard mode, you can load your characters from a previously saved game. For example, if you have a level 50 Wolverine from Normal mode, you can start the game with him and all his powers, gear, and costumes that you have gained. It also adds five more dots to level up your powers with. If you have a character maxed out in Normal mode, there is even more room for improvement.
Hitchhiker's Guide To The Galaxy reference
After the third level, go to Iron Man's lab, and talk to Spider-Man. He will say "The only thing that could make this worse is if Earth was blown up to make an intergalactic highway."
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.
Play as Black Panther
Collect the five Black Panther action figures (one is found in each Act) to unlock him.
Play as Blade
Win the toy grab mini-game at the Carnival in Murderworld to unlock Blade.
Play as Daredevil
At a S.H.I.E.L.D. Access point (where you select your team), press Left(2), Right(2), Up, Down, Up, Down, Start to unlock Daredevil. If you entered the code correctly, you will hear a sound. Alternately, collect the five Daredevil action figures (one is found in each Act).
Play as Dr. Strange
Save Dr. Strange in Mandarin's Palace to unlock him.
Play as Ghost Rider
Trade places with Ghost Rider in Hell in order to save his soul to unlock him.
Play as Nick Fury
Successfully complete the game to unlock Nick Fury.
Play as Silver Surfer
At a S.H.I.E.L.D. Access point (where you select your team), press Down, Left(2), Up, Right, Up, Down, Left, Start to unlock Silver Surfer. If you entered the code correctly, you will hear a sound. Alternately, defeat Galactus in the Skrull Throneworld.
Recommended team
Use the following trick to make a hard to kill team. Create a team consisting of Wolverine, Blade, Luke Cage, and Ghost Rider (Bad To The Bone team). The team bonus will be that 5% of all damage will be regained as health. Also, all these characters have a way to regenerate health. Equip the following outfits. For Wolverine, Astonishing, max out Health Regen and Defense. For Blade, Ultimate, max out Health Regen and Defense. For Luke Cage, New Avengers, max out Health Regen and Defense. For Ghost Rider, Original, max out Resurrect Ally and Defense. It is also recommended that Ghost Rider be equipped with The Heart Of Mephisto (10% of attack damage turned into health) or a similar item because he is the only character without a Health Regen. Equip other characters with gear that increases defense or dodging capabilities. Not only will your team be difficult to hurt, but they will be absorbing and regenerating most of the damage they take. If a teammate dies, Ghost Rider will have about a 50% chance of resurrecting them. Note: Ghost Rider is the weak character. He does not regenerate, and if he dies resurrection is lost. Also, Wolverine will regenerate the fastest because he has an inherit ability to regenerate in addition to the suit's bonus.
For easy health, experience, energy, money, and Extreme Momentum Orbs for leveling, create a team consisting of Luke Cage, Elektra, and Dr.Strange. When they each have a full Momentum bar, get a group of enemies around you. Then, use the power. Elektra will stun all enemies with her Curse of the Hand. Then, Dr. Strange will use his Mystic Maelstrom to kill all stunned enemies, causing them to drop Extreme Momentum Orbs for each enemy killed. Luke Cage will use his Sweet Christmas to kill any of the remaining enemies, giving you +472% more money for each enemy killed in the attack sequence. This trick is especially useful for leveling characters, unlocking costumes, and maxing out stats. The best place to do this is in the Shield training simulator on the Thunderball mission. Even if you run out of time you will still get the levels and money; do not worry about killing the Boss. Just get your momentum on Luke Cage, Dr. Strange, and Elektra.
Second and third alternate costumes
Gain between two and four levels with a character to unlock his or her second and third costumes.
Super Speed
While playing the game, quickly press Up, Left, Up, Right, Down, Right, Start.
Team bonuses
Create a team with the indicated characters to receive the corresponding bonus:
Agents Of Shield: Captain America, Nick Fury, Spider-Woman, Wolverine
Agile Warriors (+10% reduced energy cost): Spider-Man, Spider-Woman, Elektra, Deadpool
Air Force: Human Torch, Ms. Marvel, Storm, Thor
Alternate Identities: Ironman - War Machine, Ghost Rider - Western, Spider-Woman - Secret Wars, Ms. Marvel - Ventura, Thor - Beta Ray Bill
Assassins (+60% for S.H.I.E.L.D. credit drops): Blade, Deadpool, Elektra, Wolverine
Flashback: Iceman in Snowy Form, Captain America in WW2, Daredevil in Original, Ghost Rider in Original, Iron Man in Classic, Ms. Marvel in Original, Wolverine in Classic
Martial Artists: Black Panther, Captain America, Daredevil, Moon Knight, Nick Fury
Marvel Knights: Black Panther, Daredevil, Dr. Strange, Luke Cage, Spider-Man, Moon Knight
Marvel Royalty: Black Panther, Dr. Strange, Thor, Storm
Natural Forces (+5% damage inflicted as health gain): Thor, Storm, Human Torch, Ice Man
Natural Leaders: Captain America, Dr. Strange, Mr. Fantastic, Nick Fury, Storm
New Avengers (+5% all resistances): Captain America, Luke Cage, Wolverine, Spider-Man, Spider-Woman
New Fantastic Four (+15% maximum energy): Ghost Rider, Luke Cage, Spider-Man, Wolverine
Power Platoon (+20 energy per KO): Silver Surfer, Iron Man, Ms. Marvel, Thor
Supernaturals: Blade, Dr. Strange, Ghost Rider, Thor
Think Tanks (+15% max health): Dr. Strange, Mr. Fantastic, Spider-Man, Iron Man
Weapons Specialists: Blade, Captain America, Deadpool, Elektra, Nick Fury
X-Men: Colossus, Iceman, Storm, Wolverine
The Courses
At the simulator terminal screen where you choose a Comic Book mission, quickly press Up, Right, Left, Down, Up, Right, Left, Down, Start to unlock The Courses.
Touch of Death
While playing the game, quickly press Left, Right, Down(2), Right, Left, Start.