Once you begin a session as a second level character, you still have multiple options for changing your character’s choices. You cannot use Rebuilding (for level 1 characters) or Retraining to build a character that could not be built without using either of those two tools.
Complete Retraining: There are two AcP Boons which allow characters to clear and retrain character decisions from all levels. Evolving Destiny is for characters with 47 or fewer XP (level 4 or lower). Career Change is for characters with 48 or more XP (level 5 or higher). For more information on purchasing either, see the boon text .
Partial Retraining: For rules on only retraining certain character options, see Downtime Retraining.