Almost Good (Spoilers)
I liked this movie up until I realized we don't get a backstory of any kind on the killer. Even one tiny scene to explain why he's doing this or who he is would have really helped. But we get no reason for it. And we never find out why he has that mask. All we get told is that he's wanted by the FBI for being a serial killer. I think we needed an explanation.
The rest of the movie really wasn't bad. It's gory. It's fast paced. But without a tiny bit of back story on the killer, it just makes it all a waste. And the ending seems final, so we won't even get a sequel to explain it.