I tried this quest a few weeks ago, killed arzal (I believe that was his name) and took his belongings. I must admit I was under the influence, and I got lost within the passage ways, so just left bleak falls all together. Now, I have returned. I had to re-kill many bandits and the frostbite spider. But the character tied up in webs is not there. Will this effect the outcome of the quest?
If you aquired the golden claw from him, it will not affect the quest. If you are looking for his body, he often tries to run down the passage adn then gets killed by draugr. If you are completing the dragonstone quest for Farengar, Arzal has no effect on that quest.