There are not many films out there that leave you exasperated, yet exhilarated by the time the finale has played out. But then there are films by Gaspar Noé, the undisputed victor for the title of ‘l’enfant terrible’ of the filmmaking world, who has a writing and directing back catalogue that has to be approached with caution by even the hardiest of filmgoers. His latest, Climax, while not as harsh as some of his previous – for example, the notorious Irreversible’– is a film that will undoubtedly shock many. Thankfully, because there is so much to appreciate and marvel in…