As a games making program, seuck isn't too hard to get to grips with once you get going, but many of the seuck games I've played have been all but impossible to reach the end of as the authors tended to just make them so damn tough to play. I think they make them that way with the mistaken belief that making them ultra-tough it will give longevity to the game. Of course the reality is, you play em 3 or 4 times and then go, "sod that for a game!" Thats why I decided when making my game that the game would be challenging but can be completed and if you were good - with lives to spare. (All with practice of course!)
I havent tried the C64 version of seuck, but I know it was supposed to be very good.