Nova Covert OpsEdit
Flame turrets appear during the mission "The Escape" of Nova Covert Ops. They rotate and spew flames in two lines (rotating with the turret), damaging Nova and any allied ghosts caught in it for 20 damage per second. This can add up, particularly in sections where marauders slow Nova down. Flame turrets are invulnerable, and unlike gun turrets cannot be deactivated.
Do not take any damage from the flame turrets in the “The Escape” mission on Normal difficulty or higher.