Umineko WTC - Alliance of the Golden Witch Episode 5 - Beatrice-Sama Love is War [Ch 15-17]

It's time for the action packed first part of the finale of the question arcs! The surviving humans mount a resistance against Beatrice, but will they be able to leverage their magic-like powers and the rules of narrative irony well enough to defeat the demons consuming the island? And what is with this test that Beatrice is putting the cousins through? And most importantly, is Battler even Battler?