Can anyone lead me to a good character build for this because I made it to level 6 and am getting massacred by this deadra lord,because I don't wanna use the character creation cheat.

I don't exactly remember Battlespire, but isn't it a level where you're on an open island? If there's only one specific Daedra Lord boss you can't kill, it's probably the one you need the Spear of Bitter Mercy to kill.

Get Reflect ASAP.

I always make sure I have mana and health regen, with those two you can get through the game so much easier. So, so much easier.