My first play through was normal which is what I always play on especially when I know I'll be going back through on the harder difficulty level. I don't like my inital contact with a game to be a frustrating chore which most hardest difficulties are. I am stuck at the moment on my insane playthrough. Its the silverback section on the boat where you have to shake the big angry fish. It seems as thought the friendly AI just stops helping which is making it nearly impossible,