I'm not quite sure how these two things work. I've tried using Barrage for the multishot, but that doesn't appear to have anything to do with the unit's attack... and it's fixed damage anyway. So what do I use?
As for line damage, I just can't figure it out at all. It seems to have no difference from regular splashing artillery, and I'm not sure if Missile (Line) works at all. Further, it doesn't seem to pay attention to the "Maximum Units Targeted" thing. The intent here is to make it so that a unit will "Strike with such force that he runs his target straight through, and hits a unit behind"... only he's hitting every unit, behind, and to the sides.
As for line damage, I just can't figure it out at all. It seems to have no difference from regular splashing artillery, and I'm not sure if Missile (Line) works at all. Further, it doesn't seem to pay attention to the "Maximum Units Targeted" thing. The intent here is to make it so that a unit will "Strike with such force that he runs his target straight through, and hits a unit behind"... only he's hitting every unit, behind, and to the sides.