I felt that this manga was a train wreck from the start. The plot didn't interest me, a lot of the characters designs were incredibly hard to distinguish and had almost nothing going for them in the story.
This series heavily relies on using lots of blood/gore and sex to try and keep the readers attention, with every arc starting with some kind of lesbian sex scene and ending with a huge blood bath. This can be fine if the style of the drawings are unique and cool and the things that happen are so over the top that you can actually like it (Rule of Cool).
However, the character designs fall heavily into archetypes, the style of drawing is too similar to every other anime style, and the all the "cool" stuff that happens comes off as contrived and stupid.
It also tries to the weird Quentin Tarantino-esque, out-of-chronological-order style of story telling, which I feel is something that can only work if your characters are interesting and endearing and everything actually ties together in a fascinating way (which doesn't describe this series).
In short, I don't like Murcielago. Read something else (like Berserk).