Here is the full list of all 58 Marvel: Ultimate Alliance 2 achievements worth 1,000 gamerscore.
Defeated 25 maps on Super Heroic or Legendary Difficulty without revival or map reload.
Performed all 5 recommended training Fusions in Latveria.
Threw all the proximity mines in "Balance".
Performed all Fusions by combining every available pairing of 24 heroes.
Completed 24 maps in Co-Op.
Collected 200 Team Boost.
Earned 12 Gold Medals from Simulator Missions.
Defeated 75 foes in "Balance"
Completed "Escort Duty" without destroying any turrets.
Completed "Escort Duty" without disabling any floor hazards.
Unlocked 23 alternate costumes.
Earned all Trivia rewards.
Defeated 12 mission bosses on Super Heroic or Legendary Difficulty without reviving or reloading.
Performed 10 revivals.
Completed all combat mastery goals listed on the Stats page.
Earned 8 Silver Medals from Simulator Missions.
Earned 4 Bronze Medals from Simulator Missions.
Defeated "Overload" as the X-Men.
Performed 10 Fusions with another player-controlled hero in a Co-Op game.
Earned Mission Succeeded on a Simulator Mission in Co-Op and returned to the Simulator menu.
Completed 8 maps in Co-Op.
Completed all optional mission objectives.
Defeated all Act II and III missions as a Pro-Registration team.
Defeated all Act III missions on Legendary Difficulty.
Completed a map in Co-Op.
Earned 20 high scores for each type of Fusion: Targeted, Guided, and Clearing.
Collected 125 Team Boosts.
Completed "Insidious Alliance without breaking any Health Containers"
Defeated all Act II missions on Legendary Difficulty.
Ambushed your opponents.
Defended a convoy.
Completed all melee training goals listed on the Stats page.
Scored 30 Trivia Fusions
Correctly answered 15 Trivia questions.
Completed "Insidious Alliance" with all four heroes alive.
Defeated 2 foes within 10 seconds in "Insidious Alliance."
Raided a hideout.
Had 10 special conversations between characters with a history while in an HQ map.
Defeated all Act I missions on Legendary Difficulty.
Completed all Power training goals listed on the Stats page.
Collected 30 Audio Logs.
Finished what you started.
Defeated all Act II and III missions as an Anti-Registration team.
Collected 10 Concept Art Bundles in HQ maps.
Freed a country.
Collected 125 Dossiers
Performed a Break and enter.
Collected 50 Team Boosts.
Repaid a favour.
Fought back an ambush.
Stopped a convoy.
Rescued a hideout.
Chose a side.
Defended your leaders.
Protected a city.
You or other players on your team destroyed 250 health containers.
Crashed a castle
Toppled a dictator.