I must re-recommend www.uesp.net as it really is useful, and also, using magic is the way forwards, as the best swords do 30/31 damage yet spells are only governed by how much magicka you have, which if you're a high elf is very high (I have a custom spell that does about 600-1200 damage, but i'm not sure if i've calculated correctly) also, the frostcrag spire dlc is very useful, or if you don't have xbl the mages guild is very good, because regardless of level, you can get very useful spells, or if you're not a mage, you can still get enchanted weapons and armour with soul gems, which does require soul gems, but they aren't THAT hard to find.