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