Okay everybody, I took a long break from playing this game, and I had left the single player campaign half-finished. In fact I was stuck on the last mission in Paradise. However about a month ago I picked the game back up and started playing again. I beat paradise, and then went on to beat the final two legs of the Campaign (noble rust and then anubis). I'm thrilled to announce that I finally beat the whole thing (on hard level of course).
I had forgotten how fun it was, but it feels great to have finished it!
Karen