Well I posted this video earlier (couple weeks ago) of a friend of mine doing his class upgrade quest. He edited and made it speed up 3x faster than average, so hes not hacking lol its just speed up video.
The reason I'm posting this is because people Still seem to have trouble beating this quest. Hope this video helps.
He tries to say something during the middle but its too hard to read and he was planning on putting up a larger version which was like 68MB but he said screw it and just gave us this =\.
Before you all start saying " I wish it was this easy in cb1 blah blah blah ", nothing has changed. the quest has remained exactly the same with the monster location in the dark room.
The only reason he's doing so well is because he's experienced and he has all that scrolls
Hope this helps for the newbies.