These are the cheats for the game. When entered, you can't save the game. You need to restart your game in order to be able to save.

Code Effect

Up - Up - Down - Down - Left - Left - Left - Start (In Game) Characters
Up - Down - Left - Right - Left - Right - Start (In Game) Costumes
Left - Right - Right - Left - Up - Up - Right - Start (Main Menu) Diaries
Down - Down - Down - Right - Right - Left - Down - Start (Main Menu) Dossier Files
Right - Right - Up - Down - Up - Up - Left - Start (In Game) Fusion Power
Down - Left - Left - Up - Right - Up - Down - Left - Start - (In Game) Hulk
Left - Left - Right - Right - Up - Down - Up - Down - Start (In Game) Jean Grey
Up - Left - Left - Up - Right - Right - Up - Start (Main Menu) Movies
Up - Up - Down - Down - Left - Right - Right - Left - Start (In Game) Powers
Up - Right - Right - Down - Right - Down - Left - Right - Start (In Game) Thor

Team Bonuses - Certain character combinations unlock special boosts.

Unlockables

Agents of S.H.I.E.L.D.: +15% Max Health Iron Man, Nick Fury, Mr. Fantastic, Ms. Marvel, Wolverine, Daredevil
Agile Warriors: +2 all Attributes Daredevil, Spider-Man, Deadpool, Iron Fist
Bruisers: +5 Striking Juggernaut, Hulk, Thing, Luke Cage, Thor, Ms. Marvel, Venom
Classic Avengers: +15% Max Stamina Hulk, Thor, Iron Man, Captain America
Fantastic Four: +35% Fusion Gain Mr. Fantastic, Human Torch, Thing, Invisible Woman
Femmes Fatales: +5% Damage Jean Grey, Storm, Invisible Woman, Ms. Marvel, Songbird
Martial Artists: +5 Striking Daredevil, Wolverine, Iron Fist, Deadpool
Masters of Energy: +15% Max Health Gambit, Iron Fist, Jean Grey, Ms. Marvel, Nick Fury, Penance
Natural Forces +5% Damage Inflicted as Health Gain Storm, Iceman, Thor, Human Torch, Jean Grey
New Avengers: +10% to all resistances Ms. Marvel, Spider-Man, Wolverine, Iron Man, Luke Cage, Iron Fist
Pro-Reg Heroes: +15% Max HP Iron Man, Mr. Fantastic, Deadpool, Songbird, Ms Marvel, Spider-Man
Secret Avengers: +3 Teamwork Captain America, Iron Fist, Luke Cage, Invisible Woman, Human Torch, Storm, Spider-man
Shut Up Already! - 15% Extra Health Spider Man, Iceman, Deadpool, Thing, Human Torch.
Think Tank: +15% Max HP Mr. Fantastic, Iron Man, Green Goblin, Spider-man, Hulk
Thunderbolts: +5% Damage Green Goblin, Songbird, Venom, Penance
Weapon Specialists: +5% Criticals Daredevil, Deadpool, Gambit, Thor, Green Goblin, Captain America
X-Men: +15% Max Stamina Gambit, Jean Grey, Wolverine, Storm, Ice Man, Juggernaut (interchangeable)

Unlockables

A House Divided (Silver) Defend your leaders.
A More Perfect Union (Bronze) Finish what you started.
Above and Beyond (Silver) Collect 200 Team Boosts.
All Options on the Table (Bronze) Defend a convoy.
Alliance Reborn (Bronze) Break and enter.
Back in Action (Bronze) Perform 10 revivals.
Coalition of the Willing (Bronze) Crash a castle.
Collateral Damage (Bronze) Stop a convoy.
Costume Collector (Bronze) Unlock 23 alternate costumes.
Decorated Veterans (Bronze) Complete 24 maps in Co-Op.
Defending Our Way of Life (Bronze) Rescue a hideout.
Distinguished Service (Bronze) Collect 50 Team Boosts.
Every Trick In The Book (Silver) Complete all combat mastery goals listed on the Stats page.
Experienced Allies (Bronze) Complete 8 maps in Co-Op.
Extraordinary Heroism (Bronze) Collect 125 Team Boosts.
Fallen Star (Silver) Ambush your opponents.
Freedom Isn't Free (Bronze) Raid a hideout.
Grave and Growing (Bronze) Free a country.
Heroes Unite (Bronze) Perform 10 Fusions with another player-controlled hero in a Co-Op game.
I'm With Captain America (Silver) Defeat all Act II and III missions as an Anti-Registration team.
I'm With Iron Man (Silver) Defeat all Act II and III missions as a Pro-Registration team.
If You're Not With Us (Bronze) Choose a side.
Immortal Heroics (Gold) Defeat 25 maps on Super Heroic or Legendary Difficulty without revival or map reload.
Iron and Blood (Silver) Fight back an ambush.
Knowns and Unknowns (Bronze) Repay a favor.
Legendary Alliance (Silver) Defeat all Act III missions on Legendary Difficulty.
Legendary Schism (Bronze) Defeat all Act I missions on Legendary Difficulty.
Legendary War (Bronze) Defeat all Act II missions on Legendary Difficulty.
Listening In (Bronze) Collect 30 Audio Logs.
Melee Training (Bronze) Complete all melee training goals listed on the Stats page.
Mission Accomplished (Bronze) Topple a dictator.
Oceans No Longer Protect Us (Bronze) Protect a city.
Old Friends (Bronze) Have 10 special conversations between characters with a history while in an HQ map.
Platinum Award (Platinum) Obtain all other trophies.
Potential Evidence (Bronze) Collect 10 Concept Art Bundles in HQ maps.
Power Training (Bronze) Complete all Power training goals listed on the Stats page.
Powers of Two (Gold) Perform all Fusions by combining every available pairing of 24 heroes.
Rookie Squad (Bronze) Complete a map in Co-Op.
Seek and Destroy (Bronze) Complete all optional mission objectives.
Sim Amateur (Bronze) Earn 4 Bronze Medals from Simulator Missions.
Sim Champion (Bronze) Earn 12 Gold Medals from Simulator Missions.
Sim Expert (Bronze) Earn 8 Silver Medals from Simulator Missions.
Sim Team-Up (Bronze) Earn Mission Succeeded on a Simulator Mission in Co-Op and return to the Simulator menu.
Superior Intel (Bronze) Collect 125 Dossiers.
Tactical Training (Bronze) Perform all 5 recommended training Fusions in Latveria.
Trivia Buff (Bronze) Correctly answer 15 Trivia questions.
Trivia Genius (Bronze) Earn all Trivia rewards.
Trivia Team-Up (Bronze) Score 30 Trivia Fusions.
Uncontained Aggression (Bronze) You or other players on your team must destroy 250 health containers.
Undefeated Heroes (Silver) Defeat 12 mission bosses on Super Heroic or Legendary Difficulty without revival or map reload.
United We Stand (Silver) Earn 20 high scores for each type of Fusion: Targeted, Guided, and Clearing.

Unlockables

Deadpool Beat the D.C. Level
Green Goblin and Venom Beat them at the end of Wakanda Act 3
Hulk Collect all 5 Gamma Regulators
Iron Fist Choose the Rebel side when faced with the choice
Jean Grey Collect all 5 M'Kraan Shards
Ms. Marvel Beat the NYC Level
Nick Fury Beat the Game
Penance Defeat him and enter the Negative Zone.
Songbird Choose the Register side when faced with the choice
Thor Collect all 5 Asgardian Runes