Aim to reaquire target, firing single shot and using edge for the re-roll. I'm aiming for his eye 
8 (Agility)+4 (Firearms)+1 (Lasersight)= 13
I'm assuming the penalty for hitting small objects applies which is -4; ending with a healthy 9 dice
9d6.hits(5) → [4,1,4,2,3,6,2,4,5] = (2)
7d6.hits(5) → [6,5,3,5,2,3,2] = (3)
That makes 5 hits.
4d6.hits(5) → [2,1,3,4] = (0) 5 net hits = 15DV at -1AP
Soak Roll 19d6.hits(5) → [4,2,2,6,5,5,3,2,4,4,4,6,5,2,2,2,3,3,4] = (5)
Edge reroll on soak 16d6.hits(5) → [2,6,6,6,6,2,3,5,1,5,6,3,3,1] = (7) woah, lucky roll.
Final Damage is only 3P this time, but you've forced it to spend its only Edge. Just a matter of time now before you wear it down. In other words, without that edge, you would have just put 9P in the sucker, and on the next shot, you just might.
Fire Spirit attacks with Elemental Attack (8d6-2 for shooting while running) 6d6.hits(5) → [1,4,3,3,4,6] = (1)
dodge some more 3d6.hits(5) → [3,1,4] = (0) Final DV= 4 -halfAP. Still not quite enough.
Oh hey, I just realized that I forgot the two shots from the southern tower on the whole "previous attacks this pass" penalty. Changed up the results a bit more to reflect it.
Final Result is 3P from Ruckus' shot and no effect from the Fire Spirit.