Full list of all 46 LEGO Batman achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox 360.
Achievements they've won
Achievements they've not won
Defeat Joker, Two-Face, Riddler and Catwoman as Batman.
100% game completion.
Complete Wayne Manor bonus level.
Complete Arkham Bonus level.
Collect all Memorabilia.
Unlock all the Villain characters.
Rescue 25 civilians.
Defeat Commissioner Gordon with Harley Quinn's Hammer.
Complete the second episode - Villain.
Throw 50 policemen with superstrength.
Build the Croc ride on.
Destroy 20 policemen with penguin bombers.
Super Hero on every level.
Complete the third episode - Villain.
Get all suit upgrades.
As Bane do the Backbreaker on Batman.
Smash all the cars in the robot level.
Unlock all Vehicles (Hero/Villain).
Scare 5 enemies with Scarecrow.
Use Mad Hatter's mind control to walk 5 enemies to their deaths.
Complete the first episode - Villain.
Build the giant LEGO Robot.
Max out the stud counter.
Defeat 10 goons and 10 police officers with Two-Face in a level.
Eat 15 enemies with the Venus ride on .
Freeze 50 enemies as Mr. Freeze.
Knock 5 people into the ground with a vehicle at once.
Finish a level without dying (Character) with no extras.
Defeat Killer Moth.
Complete the third episode - Hero.
Defeat Catwoman 9 times.
Shock 30 people with Joker's hand buzzer.
Shock the Joker with the Joker.
Complete a level in co-op.
Complete the second episode - Hero.
Collect all suits.
Unlock all the Hero characters.
Complete the first episode - Hero.
Defeat 8 goons in 8 seconds.
Glide for 9 seconds.
Destroy 12 objects at once with Bat Bombs.
Perform 20 backflips in a row with Robin.
Destroy 10 objects in one Batarang throw.
Build 50 LEGO build-its.
Slam 20 goons into the floor with Batman.
Smash all street lights in Episode 1 Chapter 1.