Rosetta's chosen class on returning to the dungeon, displayed on her nameplate at level 60.
Barn Burner is the class Rosetta selected when she re-entered the dungeon under The Standard Merc Package. Her nameplate reads Rosetta Thag, Crest Barn Burner, Level 60, Colonel in The Princess Posse, This is a subordinate. She carries no visible weapons and wears only unenchanted leather, consistent with the merc package's total lack of gear.
Whatever the class does, her first act on arrival is to demand Carl's remaining toraline, the tattoo ink Shi Maria brewed, access to his Saferoom and bomber's studio, and four million gold — suggesting the Barn Burner works through alchemy, tattoos and prepared destruction rather than a weapon in hand. The floral tattoo covering her body, dark the last time Carl saw her, now glows.
Rosetta's returning class, apparently oriented toward alchemical and incendiary work.