As other people have said, please do not go into this looking for a realistic climbing experience.

It is definitely not that, and is more of a physics-based climbing game, with rage game elements. This is especially obvious later on when the climbs get really long and more hazards introduced, but the game is rarely ever unfair. Every hazard has a way to be dealt with, but it is up to you to figure that out.

Do not expect to climb everything on the first try, it will likely take you many times to summit each one of the peaks.
However, the payoff of finally finishing a climb and seeing that view at the end makes it all worth it.

As a word of advice: Stay calm and Patient.
The moment you start tilting, you are going to make mistakes, which makes you even more tilted, and you make more mistakes.
There is no shame in popping down a rope and walking away for a couple minutes to calm down, I have had to do it several times on the later peaks to calm myself.

Happy climbing!