Nein, ich hab's schon durch, aber dort in Caldera musste ich auch mal in die Komplettlösung gucken, weil mich da alles ein wenig verwirrte. Black Mill ist von seinen Rätseln her teilweise ziemlich knackig, nicht nur jetzt (mach' dich auf einiges gefasst ^^).
Hast du schon einen stockfinsteren Gang gefunden, wo man durchklettern kann? Solltest du finden, wenn du den Schienen folgst, da geht's dann weiter.
Hier mal vorsorglich der Caldera-Teil der Lösung:
Sir Amra is in the Governor's Palace. Go up the stairs in the far left corner, to Odral Helvi's bedroom two flights up. Talk to Sir Amra, and be honest! He'll direct you to the Caldera Mines to find Hasib.
After passing the Mining Company Office you'll see a signpost pointing right towards the Old Mines; maybe you can see the Ebony Mill in the distance. Be careful when you enter the mines, as you always should be when you go into caves and ruins and the like.
The entrance to the Ebony Mill itself is up the stairs behind that first miner you encounter, but you won't get very far in there, you need a key first. So continue into the mine passages to find Hasib, as Sir Amra advised. And mind your head! You might get confused about where to go in there; it's easiest to just follow the railway track, although there's nothing against exploring elsewhere and confront the baddies that hang around there. You can also sneak past, but you can't avoid all of them...
Keep following the track to the end, and find out another reason to be afraid in the dark. Crawl through the hole into the rearmost section of the mines.
Now's the time to use a Rising Force potion. Go up and to the right to another railway track; to the left you'll see an old railcart. A little further the track is blocked by a grate, but pushing the railcart will get you through. Then there's another grate blocking your way, and no railcart you can use! But you may remember from what Sir Amra told you, that those railcarts and mechanisms are driven by the mill; there's a cave with buttons to operate everything, but you need to crawl back through the black hole to find it (if you haven't already).
Walk from there to a passage on the right that leads up to a lava stream, and a cave behind that. In that cave are buttons inside alcoves, and a row of bells, which can give you a clue about which button to push. Or just take your best guess and take the damage, of course. (It's the leftmost button.) Then go and crawl through the black hole again.
Take it from where you left off, and follow the railway track to the end. On the far end you'll meet Hasib; talk to him, and he'll give you the key that gives access to the upper part of the Ebony Mill. Pay attention to what he tells you, and RUN! Find the stairs leading up to the mill entrance (back in the front section of the mines) and proceed upwards. You'll need to levitate again for this... Then defeat JurGor, and pick up the book Terra.
Return to Sir Amra with the book. When you enter the Palace you'll hear the sounds of fighting - Sir Amra is being attacked! You can rush up the stairs if you want to save him, but it'll be futile, he will die anyway, sadly. Read your journal to find out what to do next (as you may have made a habit of by now.)
Und hier der Link zur Komplettlösung. Ich muss zugeben, dass ich leider im Endeffekt ein paar Mal zu oft reingeschaut habe, aber immer nur, wenn ich wirklich nicht weiterkam.