Yes ,I found the routes rather quickly cuz of trying every choice . I also didnt find the survival sequences hard at all ,just balancing and using the skills accordingly and quite fun actually . I think the game is quite well balanced ,anything else and it would be too easy .
I just struggled to find that isaac biting scene that I found easily when I played the game the first time. Thats why I am checking If I missed any 'secret scenes ' in anthonys /simons routes.