I almost always make a point to skip this boss because of my first horrific experience with it. My first time playing Dark Souls, I didn't know that weapon upgrades were a thing until Anor Londo and I had to go against the Gaping Dragon with an unleveled scimitar. The fight took me over 10 tries to finish because I didn't know what was going on with his running attack, and when I finally finished it, it took me almost 30 minutes for the whole fight. I almost gave up on Dark Souls right then and there, but a friend managed to convince me to co-op with him to get through the next couple areas. Through an absolute miracle, he managed to drag me through Blighttown and Sen's Fortress without any major complications. Almost as soon as we started the Iron Golem fight, he realized why I wasn't doing any damage and he almost pissed himself laughing over voice chat. Suffice to say that I've never lived that one down, even though it's been almost 4 years now.