Andre Perkowski got such a great response on his "Silent Shadow of the Bat-Man" (previously at Neatorama) that he produced a three-part serial as a follow-up. It's called "Arkham After Midnight". This is Chapter One: "Mark of The Mad Hatter"
Big globs of setup concerning Arkham Asylum... madness! surreal delirium!
Hallucinations! Screaming lunatics! Obsessive supervillains! That amazing
triumph of conceit over technology, the incredible "Bat-Gyro." All this and the
trippiest final two minutes you ever needed to see.
To keep up with further adventure of retro Bat-Man, you can subscribe to his YouTube channel. Link -Thanks, Andre!