I see lots of flaws in Dottie's 'perfect' trap.
Only an utter and complete moron sets up an armed ambush with their men in a perfect circle around their target. They'll end up shooting each other.
I may have said it before. If someone points a gun at me, I want them within my reach. Dottie's cold professional is an idiot to be so close to Stoker, with a rifle no less. It's the easiest weapon you can disarm and deflect at close range.
It would seem even The Fiddler may be on Hugo's side.
The puzzle here is very simple. In a room with 54 targets, only four are important; Dottie, Assassin One, Hugo, and Alec. I can see some solutions.