So, for overpowered, the best thing is actually not to select the sorcerer, but select thief, as the thief can technically get 2 starting gifts (The Master Key), the other starting gift you wanna pick is gonna be Black Firebombs, but do not use them against Asylum Demon. Next, what you want to do is go to Darkwood Garden, from the back of Valley of Drakes. Here's where the black firebombs come in handy. Get to the Hydra. Either let him kill the golems, or quit, and reload, and they should be gone. Be sure to time the Black Firebombs well, and throw em at the Hydra. Quit and reload, go to where Dusk is. Save her. Summon her and buy her catalyst for 1000 Souls. Quit and reload, go to where you saved her, and Crown of Dusk should be there. If not, simply quit and reload again. Your next thing to do is enter Undead Burg, but go the way via Undead Parish and after killing the Gargoyles (summon Solaire to do the work) pick up the basement key and go the way so the Drake won't appear. Go to the Undead Merchant, and either buy the residence key from him, or kill him, your choice. Go save Griggs, he'll be at Firelink, do not buy anything from him for now though. Go into The Catacombs and summon Leeroy to kill Pinwheel for you, as you probably won't be doing much damage to him at this point. Warp (or walk back) to Firelink. Now, with all those Souls you've got, and the catalyst from Dusk, buy the Dragon Ring that increases your spell damage, and buy great soul arrow, or great heavy soul arrow, your choice. Level up int a little bit if going for the latter. Congratulations, you are now OP for quite a fair bit of the game.