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