It is a game with the best climbing mechanics I've ever seen.  Everything about the climbing itself is perfection. 

The only problem I have with the game is a small issue that has massive repercussions on the rest of the game's flow.  The rising 'water' that kills you quickly if you fall in.  It rises extremely quickly and seems to either speed up or teleport upward if you make a lot of progress. The thing about climbing is that you actually have to think about what you do well in advance of actually doing it or you make a massive mistake which would certainly cause you to fall to your death. The issue with how the water behaves is that if forces you forward without having a chance to think about what you are about to do which inevitably results in your death. 

If the game simply removes the water hazard or at least slows it down past the interlude point where the announcement voice literally says no leaks detected before you move on and look down to see the bloody water rising again then it wouldn't be an issue. Alternatively the options menu could have a inclusivity section with one option that just removes the water. If the dev is worried about it being too easy to stay alive from falling because of the lack of water they could always add fall damage and make the player slow down then slip off the grab point if they are falling too fast. That way the player has a chance to recover from even the most deadly of falls. 

There are always some people out there who just tell people who complain about difficulty to get good at the game but I simply don't have the time or energy to do that. So because of the aforementioned issue this game only gets a 3 star rating from me right now.