Reading the blurb and the various reviews I was expecting a bloody, black comedy; which Some Guys Who Kills People is to some extent but in the end it's far more than that.
Kevin, freshly released from a mental institution, works in an ice-cream parlour whose simple life is dominated by his critical boss, overbearing mother and constant run-ins with the now-grown-up school bullies who made his life a misery. His only friend is Irv, colleague from work, who advises Ken to stand up for himself. Of course, once Ken's ex-tormentors begin meeting gruesome endings the Sheriff and his Deputy begin closing in.
Ultimately, it's actually a rather sad film(in the true sense of the word). Ken's life is nothing to write home about though he somehow manages to keep a brave face despite being treated like dirt by family and peers. The relationship between he and his mother, and ex-girlfriend, were the focus of the film in my opinion. Emasculated, it's hard not to feel sympathy for him as he's constantly belittled and undermined.
The blossoming friendship between he and Stephanie is heartwarming and unsurprisingly awkward (given Ken's lack of social finesse); not entirely essential to the script but a nice addition nonetheless. The Sheriff and lackey are both comedy gold with their dead-pan banter as they investigate the grisly trail of dismembered limbs.
In short, a remarkably touching comedy-drama about some simple guy who dreams of revenge and a better life.