In first you need at least level 10, in second you need the special armor which increases your life, and as a personal recommendation use better the sword that you can also create and the different melee skills that Feraldo teaches you when you fight against him.
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you need to level up all your skills available through first if you are level 8 then increase your strength level by six then constipation level four or 5 if you want dex level 4 willpower is level two or four it depends on if you want to have more power on using the skills i mean and that's it that's only you have the sword ok don't use the gun....that works with me but if you want to increase more of your intelligence as well just add 1ok that's all i can tell you