Full list of all 40 Scribblenauts Unmasked: A DC Comics Adventure achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Have Alfred clean a dirty Batmobile.
Complete the final mission.
Complete Robin vs. Harley Quinn mission.
Put Beast Boy underwater and see how he transforms.
Complete Flash's origin mission.
Complete Green Lantern's origin mission.
Complete Aquaman's origin mission.
Complete Superman's origin mission.
Complete Superman vs. General Zod mission.
Get 3000 amount of Metropolis reputation.
Complete Wonder Woman's origin mission.
Unlock your first costume.
Give Gizmo something to turn into a weapon.
Give Lobo something in his favorite color.
Complete Batman's origin mission.
Complete Wonder Woman vs. Cheetah mission.
Complete Batgirl vs Scarecrow mission.
Get 3000 amount of Gotham reputation
Complete Aquaman vs. Ocean Master mission
Get 3000 amount of Justice League reputation.
Complete Cyborg vs. Deathstroke mission.
Complete Flash vs. Zoom mission.
Complete Batman vs. Ra's Al Ghul mission.
Spawn an alternate version of Green Lantern.
Spawn an alternate version of Aquaman.
Spawn an alternate version of Flash.
Spawn an alternate version of Wonder Woman.
Spawn an alternate version of Cyborg.
Spawn an alternate version of Superman.
Complete Green Lantern vs. Sinestro mission.
Spawn an alternate version of Martian Manhunter.
Create an object in the Hero Creator.
Complete Superman vs. Lex Luthor mission.
Spawn an alternate version of Batman.
Spawn something with the Batcomputer.
Complete Batman vs Joker mission.
Unlock all costumes.
Infect 500 people with undead plague.
Complete 400 heroic feats.
Spawn 150 different Green Lanterns.