This is not an easy watch. And while Climax may suggest this to be very sexual or at least sensual, you might be dissapointed if you're looking for that kind of "satisfaction". The choreography of the dancing is really good, the cinematography is something to behold too. If you don't mind long uninterrupted shots that is of course.
This is about addiction, about people driven to go the extra mile and about people hoarded in a secluded location going "nuts" as some might describe it. And as a different reviewer wrote: this is an experience. It will split a lot of people as it did at the various festivals it played. This is not an ordinary movie, but when has Noe done that? So if you are aware of his body of work, you at least know not to expect something "normal". Now some have stated, that if you had experience with certain drugs, you may understand or "enjoy" this experience more than others. I can't talk to that, not having had that experience. I can say though that this is quite rough to watch. Especially when things spiral downwards ...
Still very enticing and tension filled. Technically almost flawless it will depend what you make of the "story" or rather the excuse of one to get the viewer to go on a ... well "trip"!