I went down to the skeletons first in my first playthrough. I was so pissed until Croft told me go up first. Blighttown isnt even that bad, in fact I always get through it without even using the rusted iron ring. Once you get passed the blow darts its pretty simple.
And yes Ornstein and Smough were easy top choices. I forvet the amount of times I failed at beating them, only beat them with the help of 2 ppl I summoned. Later I could beat them with just Solaire. The archers never gave me an issue until last playthrough, I always just kill the one blocking my way though never kill both.
Seemed like everything was OP before patch. I should look for a Dark Souls that hasnt been patched just to see the difference.