I think that we need a real plan here, charging ahead blindly will possibly get Beat killed. I like the idea of opening with Crusher Bone, as well as using our drills on another summoned bone to produce high-pitched screeching sounds that could probably really hurt and disorient it. Even with working eyes, that kind of sensory feedback is going to send someone for a serious loop, that's why the "bang" part of "flash bang" grenades is still very effective against humans. I think we need to advance into the cave in order to minimize it's ability to dodge around us, with Verge either flattening it with Crusher Bones, or using his drills to bring the ceiling and walls down on it at opportune times. Beat's best way to work against it isn't to try and gum up its wings, it's too strong for that. Better it's to blind it, which will make our attacks that much easier to hit so long as we keep up the noise using the Crusher Bone as a scratch-board.
[X] Plan Blackout
-[X] Verge summons up a Crusher Bone bone, and once we enter the tunnel he begins using one paw to produce intermittent screeching sounds on it in order to disorient the Pipismon.
-[X] Beat uses the disorientation to web up its eyes as best he can, as well as gumming up its mouth.
--[X] From there Beat focuses on tying it down and re-applying any webbing to its eyes and mouth that he can. His task right now is to ensure that it's in no position to react well while we actually attack it.
-[X] With the Pipismon disoriented and hopefully flying blind, Verge summons up Crusher Bones to swat it out of the air, and if possible bring down parts of the cave wall and ceiling in order to ground it and injure it further. If Verge manages to ground it, go for a killing strike as fast as possible, either aiming for the eyes or the mouth.