Here is the full list of all 12 Lowglow achievements.
Complete 30 levels with less lines than the given amount. Magnificent!
Open all of the vaults in Umbralight
Complete the fifth chapter
Complete 15 levels with less lines than the given amount.
Complete the fourth chapter
Complete the third chapter
Complete the second chapter.
Complete a level without missing a single drop.
Destroy 50 lines.
Open your first vault.
Complete the first chapter.
Complete 5 levels with less lines than the given amount