You can one shot a draugr from sneak, from rear with flint arrows too, probably with wood ones. If you are far enough away you can one shot starred ones. Make the next bow asap with iron. Upgrading your benches is more important than anything else, then round iron shield then weapons, That shield is a big upgrade for parrying, then some make armor, though heaven only knows why. And the sledge. With the sledge you interrupt Bonemass and quicken the fight a lot. Or not.

Dig a moat, build earth wall, ignore trolls.