Now, almost a decade later, most readers would be hard - pressed to list off any major plot points of the series. (cbr.com)
Here's a quick guide to the level pack with locations of all the major plot points in the story without giving too much detail. (brickstolife.com)
Additionally, to prevent grinding, until you pass a certain plot point in the story, you're capped at level 15, no matter how much experience you gain. (snackbar-games.com)