Hero.    25 points
Complete the first episode - Hero.
    
Super Hero.    25 points
Complete the second episode - Hero.
   
Crusader.    25 points
Complete the third episode - Hero.
   
Villain.    25 points
Complete the first episode - Villain.
   
Super-villain.    25 points
Complete the second episode - Villain.
   
Crime Lord.    25 points
Complete the third episode - Villain.
   
Sidekick.    15 points
Complete a level in co-op.
   
Memorabilia.    35 points
Collect all Memorabilia.
   
League of Assassins.    30 points
Unlock all the Villain characters.
   
Justice League.    30 points
Unlock all the Hero characters.
   
It's the car, right?    30 points
Unlock all Vehicles (Hero/Villain).
   
1007 Mountain Drive.    30 points
Complete Wayne Manor bonus level.
   
Unbreakable.    30 points
Finish a level without dying (Character) with no extras.
   
0000001 00000011.    20 points
Build the giant LEGO Robot.
   
The city is safe... for now.    50 points
100% game completion.
   
Cobblepot School of Driving.    20 points
Smash all the cars in the robot level.
   
Vigilante.    25 points
Rescue 25 civilians.
   
Be a Hero.    40 points
Super Hero on every level.
   
Super Builder.    20 points
Build 50 LEGO build-its.
   
Nice Outfit!    20 points
Collect all suits.
   
Dressed to Impress.    20 points
Get all suit upgrades.
   
The Richest Man in Gotham.    40 points
Max out the stud counter.
   
The Most Dangerous Man on Earth.    20 points
Defeat Joker, Two-Face, Riddler and Catwoman as Batman.
   
Heads I win, tails you lose.    20 points
Defeat 10 goons and 10 police officers with Two-Face in a level.
   
Who needs curiosity?    20 points
Defeat Catwoman 9 times.
   
Shot to the goon.    20 points
Defeat 8 goons in 8 seconds.
   
Throwing up.    20 points
Throw 50 policemen with superstrength.
   
Atomic Backbreaker.    20 points
As Bane do the Backbreaker on Batman.
   
Oh, I got a live one here!    10 points
Shock 30 people with Joker's hand buzzer.
   
Kill-a moth.    20 points
Defeat Killer Moth.
   
Smash Gordon.    20 points
Defeat Commissioner Gordon with Harley Quinn's Hammer.
   
Start of something wonderful.    15 points
Shock the Joker with the Joker.
   
Boy Wonder.    10 points
Perform 20 backflips in a row with Robin.
   
Thanks a million.    30 points
Complete Arkham Bonus level.
   
Is it a bird? Is it a plane?    10 points
Glide for 9 seconds.
   
Gentlemen, start your screaming.    15 points
Knock 5 people into the ground with a vehicle at once.
   
Natural Habitat.    10 points
Smash all street lights in Episode 1 Chapter 1.
   
Make it snappy.    20 points
Build the Croc ride on.
   
The Destroyer of Worlds.    15 points
Destroy 12 objects at once with Bat Bombs.
   
There and back.    10 points
Destroy 10 objects in one Batarang throw.
   
Kiss from a Rose.    15 points
Eat 15 enemies with the Venus ride on .
   
Ice to see you.    15 points
Freeze 50 enemies as Mr. Freeze.
   
Say hello to my little friends.    15 points
Destroy 20 policemen with penguin bombers.
   
Scare Tactics.    10 points
Scare 5 enemies with Scarecrow.
   
Down the rabbit hole.    20 points
Use Mad Hatter's mind control to walk 5 enemies to their deaths.
   
Eat floor... High fiber.    15 points
Slam 20 goons into the floor with Batman.

..:: 46 achievements with a total of 1000 points ::..