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