Is the Hardest difficulty level a real hard one? I think I don't want to go for the Iron Man achievements but some extra points would be nice also. I was wondering if should I start the game on harderst difficulty or I would be killed a lot so the best way is to play on easy and gather all extra chieevos?
I don't really want to get killed "suddenly out of nowhere" but I am quite good at singleplayer FPS games. What should I do to play comfortable? What is really the hardest difficulty level like?