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