I finished Catherine in about a week -- a rare feat these days -- with the True Freedom ending. As the story progressed and the nightmares became longer and more challenging, I found myself getting frustrated sooner. I just wanted the nightmares to end so I could go on and soak up more dialogue.
As the credits rolled, I thought how nice it would be to unlock a New Game+ with an option to skip all of the puzzles, essentially the "game" of the game, and go through each night again. Alas, no New Game+. Only more frustration. I suppose my next playthrough will incorporate a laptop and walkthroughs.