Mass effect 2 was one of the hardest, hardest difficulty game I've ever played. I always play through on the hardest difficulty available on the first play through, and I had nightmares of the level where you are on the platforms and more and more platforms fly in. Funny thing is in that dream, I figured out how to beat it and woke up in the middle of the night and beat it first or second try. Edit- The mission Collector ship on insanity, try it