I have just purchased this game. I would recommend going to demon power. Notice at the top of your screen, there is a spiral icon and a set of numbers. If by this time that you have 66 souls... the green orbs that you are supposed to pick up after you defeat an enemy, you will go demon automatically. If not, you can summon it by pressing the tilde key next to your number 1 key to bring up the console. type pkdemon with no spaces. Notice, you will see a red aura around your enemies. Just place your crosshairs on that big bad boy and hit your fire button. One hit is all it takes.