Combat comes down to how you leveled, not how you play. Or you could just go Heavy Armor, level that up (so it weighs nothing) and have maximum armor ALWAYS without ever having to cast an Alteration spell before combat ever again.
The worst one is leveling as an Alteration mage, which gives you access to the Dragonskin spell, granting maximum armor for 30 seconds and has a 5 second cast time. Enemies are too stupid to make hiding a bad thing. Illusion magic becomes useless at later levels, since the spells don't do anything if the enemy is too high level and enemies scale to your level. 'Twincasting' the first healing spell is actually worse than just casting it once in each hand. Despite the fact that you might have ranged attacks, dragons are impossible to hit while in the air, so you end up fighting them similarly to a melee character. The options mostly add flavor to your character and little else. Few examples: Doesn't really matter if you go mace, sword or axe, fire, ice or lightning, or even two handed vs dual wielding. 'Headshots' don't matter, and most combat options in the game are poorly balanced.
Combat is too simple Fights within the game don't have very many options.
