» Tue Jun 05, 2012 11:29 pm
When fighting casters, you want high magic resistance. You can get it from Alteration perks, certain standing stones, enchantments, or potions, and it will make their elemental bolt-spam a lot less of a pain to deal with. As for their heal-spam, you need either a stronger weapon to out-damage it or a means of keeping them from using it in the first place (stagger-lock, for example).
More generally, you want a more focused build, especially in the low levels; perk a combat skill early on, so that it stays competitive, as well as at least one supporting skill (armor, smithing, etc.) to prop it up during tougher fights. Above all, don't be afraid to run away and come back when better equipped, as there are some opponents (such as boss-class casters) that you simply won't be able to beat at low levels, even with potion spam, unless you get insanely lucky.