Here is the full list of all 58 Marvel: Ultimate Alliance achievements.
Beat Marvel: Ultimate Alliance in Hard Mode.
Completed 25 levels with 3 other players.
Completed 1 level with 3 other players.
Won 100 Arcade Mode Levels.
Unlocked ALL outfits for EVERY hero
Won 15 Arcade Mode levels consecutively.
Won 20 Arcade Mode Levels.
Completed 25 levels with at least 1 other player.
Win 3 Arcade levels consecutively.
Completed a level with at least 1 other player
Won 1 Arcade Mode Level.
Dr. Doom was utterly defeated.
Nick Fury was unlocked as a playable hero.
Doom has spoken with himself.
The Mighty Galactus was toppled
Titannus was defeated.
Silver Surfer was unlocked as a playable hero.
Attained gold on all comic missions.
Completed Skrull Cityscape level without defeating a single enemy.
Sabretooth has been mistaken for Wolverine
Deathbird was crushed.
Gladiator was defeated.
Loki was defeated.
Unlocked all the outfits for the Hulk.
Unlocked all the outfits for Nightcrawler.
Ymir fell to the forces of good.
Executioner and Enchantress were defeated.
Unlocked all the outfits for Cyclops.
Unlocked all the outfits for Doom.
Unlocked all the outfits for Venom.
Defeated 4000 enemies.
Answered 150 Trivia questions correctly.
Mephisto was struck down.
Blackheart was defeated.
Threw 500 enemies off a ledge.
Unlocked all the outfits for Magneto.
Threw 50 Enemies off a ledge.
Magneto has spoken to Xavier.
Arcade was Defeated.
Black Panther was unlocked as a playable hero.
Cyclops has spoken with Jean.
Unlocked all the outfits for Hawkeye.
Daredevil was unlocked as a playable hero.
The evil Mandarin was crushed by the forces of good.
Grey Gargoyle was defeated.
The Mighty Kraken was defeated.
Unlocked all the outfits for Sabretooth.
Tigershark and Attuma were defeated.
M.O.D.O.K was defeated.
Performed 200 Finishing Moves.
Threw 5 Enemies off a Ledge.
Defeated 100 Enemies.
Answered 20 Trivia Questions Correctly In A Row.
Answered 15 Trivia questions correctly.
Fin Fang Foom was defeated.
Performed 50 Finishing Moves.
Performed 5 Finishing Moves.
Defeated 10 Enemies.