Quite an enjoyable action film, with Chris Hemsworth giving a performance a grade or two higher than required. It has the following virtues: it’s relatively short by modern film standards; the pace chugs nicely along; the violence is good; the Hemsworth is Hemsworth.
It could have been a very good film, with a little script tweaking – Hemsworth’s character just needed a bit of deepening and then it would have been something more, potentially much more.