Here is the full list of all 12 Super Blackout achievements.
Play (and finish) a custom level made with the Level Editor
Create a custom level with the Level Editor
Complete level 17 on Medium difficulty in Play Now mode
Complete all Easy levels in Play Now mode
Complete level 28 on Easy difficulty in Play Now mode
Complete level 5 on Easy difficulty in Play Now mode
Complete all Medium levels in Play Now mode
Complete all Hard levels in Play Now mode
Complete all levels in Play Now mode
Complete 30 consecutive levels in Random mode on Easy difficulty
Complete 20 consecutive levels in Random mode on Medium difficulty
Complete 10 consecutive levels in Random mode on Hard difficulty