Alright, so, plan:
[X] Plan Sober Up You Assholes
-[X] Stoke Frami and Saemd (+340 Orthstirr)
-[X] 0d6
-[X] 85d6 Defense (49d6 tricks)
-[X] 20d6 Intercept
-[X] Activate Slipstream using 1 Odr to increase our speed (-16 Orthstirr, -1 Odr). Use Ember-Wing-Cloak as necessary to move around as quickly as possible during this turn (-6 Orthstirr).
-[X] In response to his first attack use an 80d6 (w/Hugareida) Inertia-Arresting Throw with 30 Orthstirr spent on dice and 3 Odr use to hold him longer and Puncture (-45 Orthstirr, -3 Odr) and then use Contested Movement using Fight of Your Life on the next two opportunities (13d6, -3 Orthstirr) and counterattack with Sparkbombs using Puncture (-24 Orthstirr), if he gets through any of those or attacks us after we're out of them and he's not using Puncture to our knowledg, use Halting Vortex (-4 Orthstirr), and if something gets through that or we're pretty sure he is using Puncture use up to twelve 43d6+4 Reinforcedx40 defenses (-40 Orthstirr each).
-[X] Use Halting Vortexes (-4 Orthstirr) and, if those are insufficient, up to ten 42d6 Reinforcedx20 Intercepts (-40 Orthstirr each) to intercept attacks on the dwarves
-[X] Use the time we buy with keeping him trapped to use Sickness Sear on as many dwarves as possible (-10 Orthstirr per dwarf), using our extra Instances and increased speed to do so as quickly as possible.
-[X] Tactics – Basically, we're trying to lock him down for long enough to sober up all the dwarves. 15 sober dwarves working together should be able to take this guy.
I legitimately think that 80d6 is more likely to get through his rolled defenses/attacks than the Contested Movement options (given his massive +15), hence using it first. The others are still on the table, though. But yeah, we're trying to lock him down while we sober people up. 15 dwarves should be able to really mess this guy up. At least, that's the hope.
EDIT: Added a fourth IAT at 60d6 and made it three defenses we're prepped for if he gets through all four of those and the Halting Vortexes.
EDIT2: If he can still attack while trapped it's not worth as heavy an investment in trapping him, but it's still worth trying once to see if he wastes time breaking out. This costs more, but we need it to weather his attacks.