What's the precise effect of Inferno Propellant upgrade for the Galleon Mortar?

  1. The damage field hits enemies for 9-10 damage every 0.5 seconds or so while they remain in the area of effect, so the damage per second should be around 18-20. Choosing the High-Explosive Charges upgrade (+35% damage) also increases the damage of the field to 12-13, making the dps more like 24-26. Note: All of these damage values are for unarmoured enemies found in the first Who Knows Where area. I'm not sure if the damage field will damage armoured enemies.
  2. The field does not appear to slow enemies down at all.
  3. Yes, If you use the Bomb Barrage skill to fire multiple mortar rounds simultaneously, all of the rounds create a damage field.