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.
Won 20 Arcade Mode Levels.
Won 15 Arcade Mode levels consecutively.
Win 3 Arcade levels consecutively.
Won 1 Arcade Mode Level.
Attained gold on all comic missions.
Threw 500 enemies off a ledge.
Threw 50 Enemies off a ledge.
Unlocked ALL outfits for EVERY hero
Silver Surfer was unlocked as a playable hero.
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.
Completed Skrull Cityscape level without defeating a single enemy.
Unlocked all the outfits for Nightcrawler.
Unlocked all the outfits for Cyclops.
Unlocked all the outfits for Hawkeye.
Defeated 4000 enemies.
Unlocked all the outfits for Magneto.
Unlocked all the outfits for the Hulk.
Completed 25 levels with at least 1 other player.
Completed a level with at least 1 other player
Unlocked all the outfits for Sabretooth.
Unlocked all the outfits for Doom.
Unlocked all the outfits for Venom.
Deathbird was crushed.
Gladiator was defeated.
Sabretooth has been mistaken for Wolverine
Loki was defeated.
Ymir fell to the forces of good.
Executioner and Enchantress were defeated.
Answered 150 Trivia questions correctly.
Mephisto was struck down.
Blackheart was defeated.
Threw 5 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.
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.
Performed 200 Finishing Moves.
Tigershark and Attuma were defeated.
Performed 50 Finishing Moves.
M.O.D.O.K was defeated.
Performed 5 Finishing Moves.
Defeated 100 Enemies.
Answered 20 Trivia Questions Correctly In A Row.
Answered 15 Trivia questions correctly.
Fin Fang Foom was defeated.
Defeated 10 Enemies.