What class should I use on my first Insanity playthrough? I normally play as an adept because I've had the most experience with it but which is the easiest? Also, how many playthroughs on casual should I do before I attempt Insanity? I was planning on changing the difficulty as soon as I reach level60.
Will the Hardcore achievement pop up even if I do it on Insanity? What are the best weapons? I need all of the info I can get.