I don't know if it was really that hard, but there was one mission in P2 that got really annoying. The one were you have to kill some pirates for a TV show, IIRC, and the fighting takes place around a big capship. If you miss the pirates and hit the "friendly" capship even once, it quickly frys me with turret fire. I guess I could have been more patient and waited for clear shots, but at the time I was in a rather poor fighter and I couldn't miss any opportunities to do damage.