: The one after Unpfhorseen, when you've gone Leela's way not Tycho's; can't
: remember what it's called, because I don't get time to look at the map
: much. OK, I think I've worked out that you're supposed to run around the
: spiral stair thing at the far end from the start point, jumping from there
: onto another platform and from there onto the elevated walkways around the
: edge. This is what's supposed to happen I assume, but with all the enemies
: firing at me, mainly Juggernauts, I just get knocked off course. Stopping
: to fight is worse, because there are just too many of them, and all that
: happens is you die more quickly. Tried hiding and letting others kill each
: other, then trying for the run, but that didn't work either; ten or twenty
: times it didn't work...
You must be taking about "My Kingdom Pfhor a Horse." Yeah, that's a hard one, but you were on the right track with the going-up-the-stairs-and-onto-the-ledge part.
Once you get onto the elevated walkways, you need to jump into the other side of the ship bay (the walkway bisects it), and find a door on the side of that side that leads somewhere where you can go next.