Quoted from colonel_caverne:
Thanks. What is The best way to succeed? Alone? With battle? With blackwater multiball? I think it re-starts where you have lost The ball, correct?
I really have only tried to complete the mode during one sesh. That day I was playing it alone so I would know exactly what I was shooting for. The third stage is so long that I would recommend getting to the third mode and completing at least the first wave of shots. then once the dragon shot is lit, start MB. then during MB you will naturally pick off a lot more of the shots. I can see a long enough BW MB getting you through the last level of the house.
The multipliers on the display correspond to each major shot in the game (left loop, kickback, center ramp, right ramp, right loop). each time you make a shot, all other shots should be lit for 2x as long as the red arrows on the playfield are flashing (these are called combo multipliers). for each shot you hit with a flashing red arrow, the remaining shots' multipliers should increase by one. if at any point the red arrows go out without you hitting one, your multipliers go back to 1x.
Now, if you have any playfield multipliers running as well, all you shot multipliers on the DMD will be multiplied by that amount as well. So lets say you have 2x playfield multiplier running, and you have 2x from your combo multipliers going too. those DMD multipliers will all say 4x so if you hit any of the main shots, whatever that shot awards you, it will be multiplied by 4.