Sensible Software initiate here! Proud to say I've polished off CF this day. To think I was ever bested by the likes of mission 5 or mission 7... I expect I could do those in my sleep now. Little did I know the horrors that lay in store. The protracted campaigns with five or six phases were, predictably, the worst in terms of testing my resolve. Mercifully, they were occasionally followed by single phase missions which made it possible to replenish dwindling troop numbers. Intermittent lock-ups rendered mission 20-3 impassable, so I was (annoyingly) forced to skip that phase. Still, I completed 71 of the 72 levels legitimately. As was pointed out above, the middle section contains the bulk of the weeder levels. Indeed, that's where I sustained the heaviest losses. Get past the middle and I reckon your chances of completing the game will be increased exponentially. That's not to say the later levels aren't themselves "dam tuff", and in particular, mission 18 very nearly brought me to my knees. All in all, CF's a toughie but a goodie! Boot Hill was devastatingly littered with hundreds of headstones by the time I'd reached the end.