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