I wasn't sure it was legitimately based on the manhwa until Toby looked it up halfway through. I mostly remembered a priest fighting vampires on a train, and thought that it might have been swiped "inspired by" the original. But, no.

It's sad because there could have been greatness, as far as cheesy action flicks go, but it fell far, far short.

(I predict it was called Priest because it was edgy!)