Tsuna fires off another spell as well, glad to hear her voice even if he suspects she's struggling on her side as much as he is. He dodges and winces as a gash opens up on his arm. The creature screeches and Tsuna steps back a little looking for weaknesses.

It can't move as easily now and it certainly can't turn quickly anymore which is definitely good. "Aim for the knees!" he shouts, they can take it down if they do that. And if it's down they can run or finish it off. He sends a spell directly at the knee on his side. He'd aim for the center of mass if he could tell what it was on this thing but for now toppling it seemed like the best option. If his guess was right they'd only need a few more spells, maybe if they took the knees and combined their strength...