Yes, I am able to enter the castle. And Alucard, Master of Deception is there. But when i battle him and win he just sends me back to the Pokecenter in an infinite loop.
Hello, I am currently unable to re enter the dark realm.
I have defeated Horon without a faint. I did not receive the Halloween Rapidash mount. Nor am I able to re enter the dark realm.
Not sure what else is needed. I have found out this is a know bug.