| Achievement | How to unlock
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| - Get 100 Stars in S.T.A.R. Lab Mode.
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| - Complete 50% of Story Mode.
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- Arkham City Lockdown (10 points)
| - Defeat every Villain With Batman.
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- Around The World (15 points)
| - Knock opponent through all transitions across all levels.
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- Around and Around We Go (20 points)
| - Perform every level interaction once.
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- Beginner's Luck! (10 points)
| - Win a single online match.
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- Breaking Records (10 points)
| - Win 100 complete Online Matches.
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| - Enter Online Practice with someone on your friends list.
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- Bull in a China Shop (100 points)
| - Cause maximum damage in all Arenas (does not include Practice mode).
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| - Unlock a costume in the Archives.
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| - Win a match with the super move of any character.
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- Feel the Burn! (10 points)
| - Perform every Meter Burn special move of every character.
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- Go Sit in the Corner (10 points)
| - Win a multiplayer match with a timeout.
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- Gonna Need More Closet Space (20 points)
| - Unlock all costumes in the Archives.
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- Groundbreaking (10 points)
| - Use every interactable and win in a multiplayer match.
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| - Perform a 10 hit combo with every character.
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| - Unlock everything in Archives.
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- Holy Knockout Batman! (10 points)
| - Win 10 complete Ranked matches.
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- I Can Back it Up (5 points)
| - Equip a new Background Image.
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- I Conquered All (20 points)
| - Beat All S.T.A.R. Lab Missions (Excluding DLC).
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| - Vote Correctly in a KOTH match.
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- Iconic Representation (5 points)
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| - Complete 1 S.T.A.R. Lab Mission.
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- Justice for All (80 points)
| - Complete 100% of Story Mode.
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- Learning is Fun (10 points)
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| - Equip a new Character Portrait.
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| - Win 1 complete Ranked match.
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| - Perform every special move of every character.
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| - Win all story mode minigames.
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- Only a Real Master (10 points)
| - Make a comeback when at low health (10% or less).
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- Over The Top! (10 points)
| - Play 200 complete Online Matches.
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| - Get 3 stars on 1 S.T.A.R. Lab Mission.
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| - Dethrone the King in an online match.
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| - Win a match as Deathstroke without missing a shot (minimum 12 shots).
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- Practice Makes Perfect (10 points)
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- Rise to the Top (10 points)
| - Complete Classic Battle with any character.
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- Statistical Advantage (10 points)
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| - Perform every character's supermove.
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- The Caped Crusader (10 points)
| - Win with Batman using every special move and his Supermove.
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- The Hero We Deserve (100 points)
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| - Perform 8 throws and win in a multiplayer match.
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| - Complete Classic Battle with all characters.
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| - Send an opponent through all three Metropolis transitions in one fight.
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- True Marksman (10 points)
| - Win a match with Green Arrow using only arrows.
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- Ultimate Battler (50 points)
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- Unstoppable Force (10 points)
| - Win a Clash sequence with any character.
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- World's Finest (100 points)
| - Complete All S.T.A.R. Lab Missions with 3 Stars.
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- Wrecking Ball (10 points)
| - Knock an opponent through a transition.
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