Thanks for playing! As you can see, it's a completely different game. I agree that the difficulty curve is an issue, as it was for some of the early infinite runners.
People who stick to it eventually find Survival mode very relaxing, kind of like a racing game where you just let go of your thoughts and enjoy the ride. That was the main objective when I began to make the game, to get that kind of zen-like feeling from games like Wipeout or Boson X, both of which are also quite hard to master but eventually become a relaxing experience.
Still, I think I will stick to making games that don't require reflexes, like Cardinal Chains!
P.S.: in case you're using the mouse for playing, know that you can also use the keyboard for playing (and navigating menus), which I think is easier! You can use the space bar for jumping.