Although useless against demons, this weapon is great against flammable creatures and objects.
Flamethrower (Requires 1 Crew and Grants Half Cover)
Fire shoots out of the weapon's nozzle in a 60-foot line that is 5 feet wide. Each creature in the line must make a DC 15 Dexterity saving throw, taking 18 (4d8) fire damage on a failed save, or half as much damage on a successful one. The fire ignites any flammable objects in the area that aren't being carried or worn.