Here is the full list of all 58 Marvel: Ultimate Alliance 2 achievements.
Perform all 5 recommended training Fusions in Latveria.
Defeat all Act III missions on Legendary Difficulty.
Defeat all Act II missions on Legendary Difficulty.
Collect 200 Team Boosts.
Defeat all Act I missions on Legendary Difficulty.
Defeat all Act II and III missions as a Pro-Registration team.
Defeat 12 mission bosses on Super Heroic or Legendary Difficulty without revival or map reload.
Defeat 25 maps on Super Heroic or Legendary Difficulty without revival or map reload.
Ambush your opponents.
Defend a convoy.
Raid a hideout.
Earn 20 high scores for each type of Fusion: Targeted, Guided, and Clearing.
Unlock 23 alternate costumes.
Collect 125 Team Boosts.
Earn 12 Gold Medals from Simulator Missions.
Complete all optional mission objectives.
Complete "Insidious Alliance" with all four heroes alive.
Defeat 2 foes within 10 seconds in "Insidious Alliance."
Defeat 75 foes in "Balance"
Earn 8 Silver Medals from Simulator Missions.
Have 10 special conversations between characters with a history while in an HQ map.
Collect 30 Audio Logs.
Finish what you started.
Defeat all Act II and III missions as an Anti-Registration team.
Collect 10 Concept Art Bundles in HQ maps.
Collect 125 Dossiers.
Free a country.
Break and enter.
Complete all melee training goals listed on the Stats page.
Repay a favour.
Fight back an ambush.
Complete all Power training goals on the Stats page.
Stop a convoy.
Collect 50 Team Boosts.
Earn 4 Bronze Medals from Simulator Missions.
Rescue a hideout.
Choose a side.
Defend your leaders.
Perform 10 revivals.
Protect a city.
You or other players on your team must destroy 250 health containers.
Defeat "Overload" with the X-Men.
Topple a dictator.
Crash a castle.
Correctly answer 15 Trivia questions.
Complete a map in Co-Op.
Complete 8 maps in Co-Op.
Complete 24 maps in Co-Op.
Perform 10 Fusions with another player-controlled hero in a Co-Op game.
Perform all Fusions by combining every available pairing of 24 heroes.
Score 30 Trivia Fusions.
Earn all Trivia rewards.
Earn Mission Succeeded on a Simulator Mission in Co-Op and return to the Simulator menu.
Complete all combat mastery goals listed on the Stats page.
Progress through "Insidious Alliance without breaking any Health Containers"
Complete "Escort Duty" without destroying any turrets.
Throw all the proximity mines in "Balance".
Complete "Escort Duty" without disabling any floor hazards.