Re: Dark Souls - October 4th, 2011
Hopefully you got the rusty ring from the Asylum and can run normally in water. Otherwise get in very close so it does the other attack, put your shield up and hack away. Beware not to fall and die.
Then after killing it, quit the game and then get back in. Find a cave near the very back for a big secret.
Oh and did you know there are two more areas you haven't been to in Blighttown? And I don't mean after Quelaag. The entrance is on the opposite side of Quelaag's entrance hidden behind a wall.