Yes! Level 8 ('fight or flight') is either massively difficult compared to the rest, or else there's a bug somewhere.
I completed most of the first 7 levels in one or two goes each. Level 8 I've been hammering at dozens of times and barely get anywhere.
Is level 8 as tricky on the non-iPad versions? Most of the walkthroughs I've seen dismiss it as nothing to worry about.