Apparently supposed to be 'darkly comic' but there are only very brief moments that I found amusing for their sheer absurdity. The acting is superb and the film is excellently made overall. It definitely is an experience of sitting through two hours worth of watching a psychopath ruin everyone's life around them - so in that sense it is not enjoyable - but it is shot in a way that suggests (or maybe that is just my expectation) that some sort of resolution or redemption or cathartic event is possible, However, the film strictly avoids this and it's certainly admirable for that. Doing so would have been a complete cop out.