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