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