I'm playing out my new cleric swordsman build. Main stat is faith followed by dex and I'm using nothing but a divine main weapon and a Iaito as back up (when i get it). I haven't used the BB glitch, only the master key to pick up Astora's Straight Sword and the Dragon Crest shield at the start of the game.
Anyway, by the time I got to level 20, my faith was at 20 as well. Holy balls, the lightning spear tears enemies up at the parish at this level. It was one shoting the Balder Knights and was doing 300-400 damage per hit on the Bell Gargoyles. It made co-op a breeze.
Then, I went to the Garden/Basin to get my divine ember. The spear took out the butterfly in 4-5 hits. I defeated him before he had a chance to land once. And I was only hit once.
After that, I went to the Lower Undead Burg and took on the Capra Demon. Yep, the Lightning Spear dropped him like yesterday's trash in 4-5 hits too. The Capra got about 2 lucky hits on me before he melted.
Seriously, I'm really happy I invested the souls to level up my faith so early in the game. Aside from the bosses, it made the black knights, Havel, the Hydra, and the Crystal Golems a breeze as well. Now, I'm level 27 with a faith stat of 24 and just waiting to hit Faith 30 so I can use the G.Lightning Spear that I just got .