All I can say about it is wow. What a way to really end it. Spoiler alert for those who haven't read it yet.
Well it seems Tsukune keeps beating on Alucard but it's no good until he gets stabbed and there's a little history about Dracula and Bloodriver. Tsukune realises that Moka's rosary is the key and unleashes Bloodriver herself. I honestly didn't know how she was going to appear. Then it pretty much ends with Bloodriver, Alucard, Tohou Fuhai and Mikogame sealing themselves. And it turns out that the Outer Moka was Bloodriver all along and Akua kept her promise to release the seal. It pretty much ends with Tsukune going on the bus becoming Mikogame's successor. Volume 13 here will have an August 5 release date, Volume 14 in Japan in May and the epilogue chapter in April. I'd say it pretty much ends on a good note.