When I got to level 3, the quest monster was there, a big spider, but that was it. Pretty big room for a spider. That was the only enemy I encountered in the whole dungeon. Sounds like you didn't even get to kill the spider.
Nope <img src="/ubbthreads/images/graemlins/disagree.gif" alt="" />
Wait... now that I think about it... in the FIRST dungeon, there were two bosses at the same location. A spider and a gargoyle. I thought it was a bit wierd, but I managed to kill them both, and solve two quests at the same time. Perhaps that spider was supposed to be in the SECOND dungeon??