It starts out as a very funny dark comedy with buckets of gore and surprisingly still delivers a nice character study, very well acted, giving room for every actor to shine. That town sheriff is hilarious and the lead portrays really well with small nuances this troubled character.
It's a shame that once the novelty is gone, the movie doesn't offer much else. It's still fun while it goes but predictable and a tad too slow. And obviously, there's a twist by the end, which is a shame.
Most modern horror/thrillers to stand out lately, usually offer a fantastic blend of genres to be original, finding balance between them. Some Guy Who Kills People has excellent writting, great humour and interesting characters but needs a spark to make it truly shine. A bit of a missed opportunity but worth a shot.